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(1)On. Cumacean. the. Crustacea. Amami-Ohsima. Island,. from. obtained Southern. Japan. By. Sigeo. With. The myself 1962.. low. tide. 18 text一点gures. the which Island during. on. small collection at AmamトOhsima At. GAMO. the. materialswere. present the. is. paper. 19th. based. of July to the 2nd from. collected. the. of. August. bottom. sandy. by. made. was. in near. Eyushu. K.syukuAsaniEasariとか. Amate.hsi:arkakjn Amami-OhsimaI,. ∫. ♂. 2. D. ○. ｡｡Ko%a. ､くヽ. ＼ OkinawaI.. ○. 年左. 2. 12 81. Fig.. 1･. Map. Amami･Ohsima. showing cu皿aCeanS. low. level. water on. posited. level. water. and. bottom. net. just. IwASA. the. on. for. coral. collecting. golng. his. Of the. the. of. small. by. reef,. at. deep. meters. a. which. modi丘ca亡ion. slight. 1941),. and. from. tide-pools,. shallow. (KEITIi. method. surface further,. two. from. lsland collected.. Were. or. one. about. bottom. the. belo甲the. Before SAKAI. and. 0. by. and. also. my. gratitude. the. which of. lie. sand near. BARNARD's. delow reef-. towing. the. to. Professor. plankton. night･. I have. to. express. I must also tender guidance. Seikei University and Dr･ Huzio. my. thanks. UTINOMI. to. Of. Professor the. Seto. Tune Masao･ Marine.

(2) 30. s. GAM古. BiologlCal. Laboratory,. Kyoto. University. for. interest. their. invaluable. and. advice. followlng. The Family Bodotria B.. lS. list of species:-. a. Bodotriidae. (ZIMMER). ♪ulex. rugosa. (?). nov.. sp.. Cyclaspis. nov.. sp. amamiensis Family Nannastacidae. Nannastacus N.. CALMAN. gibbosus. umbellulifer. nov.. sp.. Cumella. sp.. DimorPhostylis. asiatica. nov. rigida Family Diastylidae. D.. ZIMMER. GAM6. echinata. Description. of the. Family. l･. Bodotriidae. Bodotria. pulex. Cuma. ZIMMER. ♪ulex. female. carapace. of is. the. with total. a丘ne. length. little less. a. the the. specimen. and. the. is. There border. for. a. a. with is. length. about. distance･. The. notch is angularly lobe is subtriangular,. antennal. The ocular rounded anteriotly'･ thap the width, the almost reaching furnished pseudorostrum The nine eyes･ and with pseudorostral in front barely truncated and lobe. meet the of ocular concave. an. with. acute. antero-lateral. angle･. longer. The carapace･. The. are. sides The. strip･. and. combined. mal. and. abdomen furnished. the are. a. is very. is. large, subequal as. wide. of the. approximately The. very. as. of lobes. is as long as the segments of all the free thoracic dorso-median a on lateral carina and all the segments. distinct･ as a The first segment is only exposed narrow. is. second. apex. length. combined There. one-fourth. times the width, which and one-third dorso-median is well marked for carina lateral ridge back from extends which. short. short. beset. :. one. and The. depth.. 3.3 mm) fossette-like. (length, about. marsupium. is densely surface background･ The. reticulate. than. anterolateral. its. of the animal. length･. whole. 4). A-C.. developing. with. is calci鮎d. sculptures. (?). Stebbing. pulex,. Adult The. (1903) s. 666, Abb. (1913) p. 26.. (ZIMMER). 2, 3,. (Figs･. Bodotria. species. the. carapace.. to the. Both. length the. of the third and fourth fourth are and the丘fth. same a. size. little longer. with. a. dorso-median. than. the. one-half carina. on. total. each. of. length the. of the anifirst to 丘fth.

(3) On. Cumacean. the. Crustacea. from. obtained. 31. Island. Amami-Ohsima. ′三'屯<-. '1.i/. A. i ･i. 2.. Fig.. Bodotria. (length,. marsupium body,. from. third. times. than. shorter. long The. 亙s. subequal basis. remaining. into as. the. is about. segment. the. as. a. stout. long. of the. as. one-third. of distal. third. merus･. which The. and. carpus. one. The. and. one,. proximal. and. accessoryflagellum is one and two-thirds The the is. distal. middle much. outer. of the longer. one-fourth is. a. The. times angle. little. distal with. minute･ as. long. as. is developed. The the. as. fifth.. the. as. furnished. merus･. than. long. as. second. is very. together･ reaches. is. is two-segmented.. main月.agellum long. long. as. the antennule. of ca･. above･. two-thirds. nerly. combined. the. portion. (length,. from. is two-thirds. segments. maxilliped. segments. others. developing. with anterior male. body,. of. of. as. B: Adult. portion. sixth. The. aesthetascs. the. the. two. The. third.. the. The. female. view･. carapace･. peduncle. distal. the. lateral. of. than. Adult. (?).. anterior. combined.. prolongation as. E:. is longer. segment long. as. sculpture. view･. fourth. and. The丘rst. two. lateral. The丘fth. segments.. the. C:. above. D:. 3.7mm):. (ZIMMER) A: 3･3mm):. Pulex ca･. merus. ischium and.

(4) 32. S. GAM6. ? ＼｡. ト. ＼. 'ござ .Jv ､v. ). t∼1. (. ′l vvLl. 鯨 /. し､. 弘. Fig･. 31. Bodotria A:. marsuplum:. H:. aeopods･ twice. about. as. ♪ulex. B:. antennule.. fifth. the. propodus･. as. (?)･. third. with. uropod. long. (ZIMMER) and. female. Adult. C-G:first. abdominal. segments.. sixth. The. dactylus. developing. with. maxilliped･. fifth. to. is about. per-. as. long. as. the. the. as. propodus.. The ing as. the. distal long. the. as. and is. propodus. peraeopod together･ The The. merus･. nearly. one-third. fringed. with. is slightly. less. dactylus.. is. of the丘rst. segments. merus. margln. the. basis. a. than. carpus as. a. little less than. ischium. is very. is long wide. narrow. one-half. as. and the. hyaline the. short. of. lamella. long and. nearly. it is twice. broad;. length. length. as. the. with. remainone-third long. as. carpus.. The. several. hairs.. of the carpu岳and. more. as. inner. The･ than.

(5) On. The is. basis. one. and. of the. two. little less. times. long. splneS and unequal the length the carpus of. unequal. distal. the. as. and. splneS,. Of which. four. of亡he. uropod. is. and. a. provided. longer. much. is. dactylus. combined. it The. together. The. is. 33;. ischium;. short. segments one.. propodus longest. the. the. with. rudimentary. distal. Island. Amami10hsima. is ankylosed. peraeopod as. from. obtained. a. than. four. Crustacea. second. one-third. carpushas. with. Cumacean. the. than. the. the. last. dactylus. The. peduncle. abdominal thirds three. segment long. as. two. the. peduncle;. interspersed. splneS. both. on. serrate. and. lateral. Adult fourth. male. width,. of the. on. ocular. lobe. eyes;. it. notch. with. above,. the. the. of. than. more. the half and anterior is subtriangular, much. reaches. almost. round. to. the. lobes. less. angle are. the. to. the. endopod. :. The. distinct. longer. than of. the. is. broardly. on. distal. the. is nearly. one一-. times. the. is well. carina. and. half.. best. with. The. pseudorostrum.. As. convave.. The nine･. antennal. from. seen. barely. and. are. furnished_. and. posterior. the width,. with. there. end. dorso-median. truncated. bears. two-thirds. and. is two-. endopod. carapace. shollowly. as. and. On. one animal and The the depth.. apex. antero-lateral. pseudorostral. the. of. length. is slightly. which. marked. total. 3.7mm). The. is serrated. serrations.. (length, about. specimen. long. as. borders.. border. outer. with. times. one-half. The is subequal splneS. unequal exopod hairs on the inner border. six. with. front. the. as. four. or. and. one. meet. i□､. lobe.. ocular. 卓感. 鮎. 臥 i. ※. /% 鮭d. Fig･ third segment.. A 4･. Bodotriapulex. maxilliped.. C:丘rst. (ZIMMER) peraeopod.. (?)･ D:. Adult uropod. male: with. A:. antennule･. sixth. abdominal. B:.

(6) 34. S. GAM古. The lhan. first. one. and. The 二1ong. segment. of the. three. rborders of. last. three. the. as. remaining. with. The. one. it. is. has. carpus. the. the. por-. length.. The. furnished. interspersed. splneS. The. lateral. posterior. whole. and. peduncle. is slightly. exopod. borders. and. six. lateral. both. on. one-half. along. times. one-half. and. little serrated. eleven. border. both. on. ischium;. the. together.. on. hairs the. as. and. inner. the. Pulex. (ZIMMER) by. from. specimens. ￣following. points. ￣1ateral ridges. on. the. surface;. Amami-Ohsima. the. anterior. the portion. with. ser-. with. one. longer. than. hairs. plumous. But. ridge.. on. description. carapace. beset. thoracic. has. a. short. species. in the a. with. are. palr. and. a. a. with. follow-. in the. basis. Of on. sculptures. provided. ZIMMER's丘gures. relatively. this. Bay. and丘gures. fossette-like. segments. from. to. furnished. with. on. in Sagami. be referred. may. based. pulex. Enosima. is. it differs. peraeopod. Cuma. as. from. ZIMMER's. and. free. to丘fth. second. described. Island. with. characters:. the丘rst. points:. agrees. of. lateral. -well marked. first. was. (length, about 3.5mm) ZIMMER (1903).. specimen. 6-22m). doubt. ￣with some The femal specimen. ing. long. border. on. B.. rr(depth, about. the. than. with. than. hairs. long. eleven as. serrulated. female. The. times. border･.. inner. Single. longer. longer it is a. short. eleven. and. outer. and. Remarks: Lla. combined･. two-third. end.. segment;. with. serrations. ￣the endopod. little. a. is much. abdominal. two-thirds. the. on. distal. uropod. border. is about. -rurations. segments. and. is ankylosed four segments. distal. the. the. furnished inner. the. two. one. longer. slightly. together. is. peraeopod. as. On. of the. the. and. ･･endopod. -the. as. peduncle as. distal. the. is nearly. maxilliped. second long. splneS. unequal. long. rてOr. of the. than. The. -tion. long. is. antennule. together.. ･distal segments The basis more. the. of as. distal segments remaining basis of the丘rst peraeopod. The. ･as. third. as. the. as. -much. peduncle. times. one-third. basis. the. of. long. very. ･CarpuS･. depth. bottom,. ･coral sandy 1♀, 2 (sex?) at. Tinase.. juveniles,4 lm,. about. juveniles, 2. the. juveniles,. 3 (sex?) at. shore Distribution:. Asani. 18. and. Bay. Sagami. same. and. young. calci丘ed,. female. Bodotria. hardened. specimen and. larvae,. from the obtained Naze. 27, 1962. July at. locality,. the. sandy. shore. the. locality,. same. the. 30, 1962.. July Tokyo. Bay.. rugosa. (Figs･. is well. shore. the. manca. Kosyuku･. 2.. Holotype. sandy. larvae,. manca. larvae,. manca. July 29, 1962.. 5?, 218, sandy. 4 (sex?). 13♀, 58,. Material:. 5, 6,. sp.. nov.. 7) 2.7 mm) The pitted.. (length, about. consplCuOuSly. The carapace. integument is. two-.

(7) on. Cumacean. the. Crustacea. from. obtained. Island. Amami-Ohsima. 35. ^へ. 鍋＼･-. (. )･. し. 壁. .し. ･こ(. ヽ←→ヽ. 啓 (.. ( し. しく. a,.. ( く. l. -こヒ(∴. ド {7. トぐr. 轄瑞. )JC(' ンrJ.. 土J. (. f(1,. く､｢し. _jj. D 5.. Fig. A:. lateral. of. width,. pitted. total. lateral. the. lateral. angle. concave. and. large,. whole below the. median. eye meet. The. ovoid. in front combined. long. as. angle. and. very. as. the. dorsal. and. side. lateral. C:. a. carina･. is obtusely width. large･. and. The. is. outline. pointed･ provided. pseudorostral. owing a. notch. The. median. On. carina･ from. the. roughly. uneven. with. carina. ridge reading The antennal. times. is very. dorso-lateral. strong. afaint. two-thirds. surface. dorso-median. form. dorso-lateral. The. The. with. pits. one. and. depth･. marked. and. antero-lateral. subtriangular, is. the. animal, the. well. of the. edges. male. background･. length. left. above. above･. than. are. (length, ca. (sculptures on (length, ca･ 3･8mm) :. from. adult. the. of. more. There. the. side. length. reticulated. pittings･. for. of. 2.7mm):. female. young. body,. from. body,. of. little. a. with血e. the. line. portion. Paratype. portion. is. which. anterior. holotype. nov･,. sp･. omitted)･. anterior. of the. sevenths. 二and. are. D:. rugosa. B:. view.. carapace. view.. to. Bodotria. the is ocular. each. antero-. shallowly lobe is. The with nine eyes･ lobes are truncated. lobe.. of the. eye. length. of all the free. thoracic. segments. is. a. little less. than.

(8) 36. s. GAM6. long. as. the. as. line and. of the second. of each. dorso-median. the short. and. about. as. third. and. like. coalesced and fourth. the. the丘rst. the. abdominal. sides. are. there. dorso-lateral. as. one-fourth. almost segment. in. subequal in. On. prominent. is an another. length.. carina. first segment. is very. is very as. median､1. surface between. faint. The. second long. a with the dorsal. carina. carina･. The. carapace･. nearly are. dorso-median. a. segments the. and. with. as. are. The. carina･. to丘fth. carina. wide. There. carapace.. dorso-1lateral. a. the. long. Both. the. small. and.. carapace.. The丘fth. large,. and. is. appearance.. I//(,. 哩. rr ∩(. ド. ＼h. ド. ^,1たFl. ,:.↑. A. `講 rや什｢､. ノ. ′･べ＼. A ′-,Yt＼ ij,. I,;,/Jl,.:. D. 7IL]7a iJt5J ハtl. ヽ. r. 二.｢. J/. F/≡ 二へ( '′ヽ. A. E F. 〟. へこ. :1. Fig･ B:. third. abdominal. 6･. Bodotria. maxilliped･ segment.. rugosa. sp･. C-G:丘rst. nov･,. to. holotype 丘fth. young. peraeopods･. female: H:. uropod. A:. antenrlule_. with. sixth.

(9) On. The. are. the丘rst. line. median. dorso-median. as. wide bined･ The fourths. long. as. the. as. The. The. basis. remaining. distal. prolongation. almost. a. nearly. one-fourth ischum･ The. the. long. the. as. podus. and. ･distal. short･. The. a. and. balf. long. both. on. serrate. slightly The segment. and. than. near. distal. three-fourths. depth･. adult. shorter than. the. one. There. male. the. and a. twice. times. as. long. the. as. pro-. long. distal. The. a. seta border. times. the. the. first.. as. and. the. as. merus. is. propodus. long. the. as. unequal. one-. propodus, distal. short. ductylus. basis. the. and. second. is. together.. than. the. last. abdominal. is slightly. serrated. and. proximal. is also. The. together. The. endopod. the. on. and. long. as. is. ischium. carpus.. segments. segments. little shorter. a. ischium. long. as. the the. than. remainlng. The. one-half. three. a_s. the. the. of. and. as. with. provided. is strongly. outer. shorter. provided portion. The. serrated･. a. with and. with. exopod. is. endopod.. (length,. specimen. two-sevenths. than. are. as. long,. one-half. as. merus. length. is about. is. as. the. distal end･. border･. border. splneS;. is. as. borders.. distal. the. remaining is. portion,. as. into. long. than. one-half. carpus. longer. inner. inner. long. as. ischium. as. as. and. than. On. about. the. distal. long. as. Paratype. less. its. distal. subequal. times. and. one. remaining. and. the. lateral. carpus,. much. as. one. shorter. the. wide. dactylus. uropod. on. peduncle;. small. much. the. serrated. splne. two. long. as. peduncleof. the. smau. peraeopod. than. both. The. spine is. on. little. as. The. distal. a. as. the. borders. the. is developed. The. and. long. splneS. carpus･. long. third less. than. unequal. lateral. one. and. The. the. as. is. little less. a. three-. and. with. angle. two-thirds. as. the. as. is. com-. segments. is two-thirds. in shape,. ischium･. short two. with. long. as. splneS. the. with. provided. serrate. one-third as. two. one-Bfth. merus. is about. three-fourths. provided. merus･. laterally. peraeopod. is rectangular. nearly. The. faint. a. with. minute.. and. the. of. with. splne.. short. and. and. its external. end. is expanded The dactylus. carpus. distal. is very. basis･. the. as. ･dactylus. The second peraeopod The basis is much shorter ankylosed. the. other. carina. the length wide is two-segmented;. one. four. the. as. one. proximal is. segment. is robust,. the. as. about. together;. long. is one-half. propodus. the. as. than. than. the丘fth.. as. antennule. mainflagellum. segments. together. and. The. reaching. as. carpus. combined,. much. maxilliped. propodusI. segments. longer. longer. last. long. as. 37. The丘rst. dorso-median. a. The. Island. animal.. is. are. of the. third. provided with basis of the丘rst. The. than. accessory且agellum. the. of. The丘fth there. is broad,. long. of the. carinae･. less. third･. as. aesthetascs･. the. and. segment. is one-half. segment two. second. Amami-Ohsima. length. segments. of the peduncle. length. the. size･. little. a. segment. as. equal. dorso-lateral. is. carina. Thefirst. total. to丘fth. two. and. the. of. from. obtained. of the. one-half. almost. On. segments･. Crustacea. is. abdomen. ･segments. a. Cumacean. the. of the. total. three-fourths. times. well. dorso-median. marked. the. about. length. 3･8mm) of the. width, carina. which on. :. The. carapace. animal,. and. is. wide. the. as. p.osterior. is little. a as. the. half.

(10) S･ GAMe･. 38. dorso-lateral. a. and. is. there. a. long. The. strlp. dorsum. the. On. long. as. the. as. and. coalesced and. narrowed, successively line. The sides median into. on the. the. third. lateral The. are. large. with. free. thoracic. The. carapace･. are. deve一oped. provided. of all the. of. The. furrow･. and. width. length. combined. three-fourths. the. as. side, each lobe is ocular. portion. anterior. longitudinal. shallow. as. angular, lenses.. the. on. carina. dorso-median. laterally;. expanded. dorso-latぴal well marked fourth there is a ridge and. a. subtri-. with. corneal. little less as. a. with. ridge･. a. is. segments. which. is only exposed The last four carapace･. furnished. somewhat. eyes. Arst. the. with. nine. below large,. between. The the. a. segments. carina its upper. segment second dorso-median. than. narrow. a. with edge. is. is large･ carina. and. carina. is. abdomen. than. more. much. one-half. of. the. total. length. ら. 零≡ ㌔. A. ㌔ bhい. ＼. ＼_I. 〟 k′. 忘＼. / F>. Fig. B-C:丘rst segments.. 7,. Bodotria and. second. rugosa peraeopods･. sp･. nov･'paratype. D:. uropod. adult. male:. with丘fth. and. A: sixth. antennule, abdominal. of. the.

(11) Cumacean. the. On. The丘rst丘ve. animal･. carina. a. with. about. less. nrst. than. segment. as. wide. flagellum. is very. The. basis. as. the. long. on. merus. and and. one-half. The. of. is. one^alf. the. remaining The. and. accessory-. and. one-third_. ischium. long. as. about. is nearlythe. as. long.. as. one-half. times. one. and the. as. long. as. times. one-third. a. with. as▲. The. propodus･. provided. the､. as. dac-. short. splne. is. distal. one. about. equal The. second.. times. both. merusb. is nearly to. the. two. carpus･､ is. basis. little. a. inner. the. as. lateral. and. slightly. furnished. with. the. end.. borders, On. splneS unequal furnished and. with The. border･. peduncle. last. the. as. furnished. anvd. the. on. long. as. borders. long. as. anky-. together･. hairs. border. outer. the. and. lateral. two. and. and. end･. is^. basis. to. subequal. two-thirds. both. The. together. dactylus. the. plumous. border the. nearly. segments. and. on. first.. The. than. distal is. the. as. distal segments. longer. eight. on. long. distal. nine. with. plumousフ. border.. The. Bodotria hitherto of the genus 1962 etc.) and B. Pulex) (GAM6. known. species. (B. similis, by. the'uropod. biplicata. carpus. with and. peraeopod. second. with. all. basis. the. from. Japan. characterized. first. the. endopod,. single-segmented. the. are. peraeopod with. ankylosed. ischium.. short The. is. is. and. propodus. serrated. inner. serrated. inner. the. broad. one. two-thirds. long. as. carpus. the. uropod. and. the. On. is. having. The. one-丘fth. carpus. as. the. On. as. it is. B.. new. and. the. but. differs. of the. one. propodus. remaining. the. setae. Remarks:. the. the. is much the. segment;. exopod. with. is. twice. long. as. peduncle. on. distal. dactylus･. than as. as. peraeopod. splneS. hairs. little. a. robust,. The. propodus. is slightly less than three-fourths the it is serrated on than exopod;. twelve. is｡. segment. subequal. than. more. is. The. The. splneS. as. long. as. splneS,丘ve. endopod. is two. together･. merus. together. more. little. a. segments. peraeopod. ischium･. times. abdominal. The. the. long. unequal. third. The. more. than. and as. short. three. less than. last. The. end.. the. has. six. carpus.. peraeopod second less than as long. slightly 1osed with. is. The. the. as. more. two-thirds. The. 39･. dorso-median. a. with. is two-segmented･. maxilliped. remaining as the basis.. and. distal. the. the. main且agellum. third. long. as. the. is. a. and. provided longest･. of the antennule little more than. peduncle. length. of the丘rst distal segments. as. tylus. of. basis. remainlng. is. distal. long. carpus. The. the the. as. as one-fourth ischium and. and. lsland. Amami-Ohsima. minute.. of. long. as. the丘fth. the. The. combined･. plump. The丘fth. as. the. as. segments. times. line･. long. as. from. are. segments. median. one-half The. obtained. Crustacea. is also. species. like. uropod. mainly. peduncle. is covered pace Material:. these. from of. the. with. 2?. provided. of the them. with. Japanese. other. in the. following. is very antennule large pittings.. young. (1?. the丘rst. holotype. robust. the. and. as. species. characters: the. and. specimen),. 1. 8,. second. peraeopod. mentioned the丘rst. surface 7manca. above,∼ segment. of the larvae,. cara--. ob-.

(12) S. GAME). 40. from. tained tat. shallow coral sandy July 29, 1962.. Tinase. 2. bottom,. the. larvae,. manca. from. obtained. 3.. the. Cyclaspis amamiensis 8,. body. The plump,. is whitish covered. the. Ion. is well. and. as. an. large. tooth.. -triangular longer than with. length. The. the. has. a. short. it reaches width; The under side. carapace is. ･segment the. space; ･of. the. sides. are. is. abdomen. with. ㌧on. length. the. of proximal. the. prolongation. but. a. from. seen. one-half. than. the. beset. The. eyes･. line･. pseulobe.. the. lollg. The. inter-. lateral. The. side.. aS. second. V-shaped. narrowly the. portion and. to丘fth. the丘rst dorso-median. the. sixth. length. total. the. of on. little. a. others,. the丘fth. as. line. the. on. posterior. long. of the. the. sides. fourth,. The. is. sixth. dorsal. a. with. is faintly. the. than. dorsum･. the. of. segments,. line. longer. of the furnished. one,. furnished. and. is very third. tumidity. which. is. a. two. with. ane. The. is very. one-third. subequal. the. as. as. short,. nagellum. main. long. three-fourths. long. times. one-half. as. third. long. as. The. aesthetascs･. minute･ is. maxilliped together. distal segments. nearly. one. combined･. segments. distal segment. the. peduncle;. two. is long,. the丘rst. is. of the antennule. peduncle distal. subequal. ･accessoryflage11um The basis of the remaining. is. potion.. is two-segmented; sgment. by. segment as. and. and. dorso-median. sub-. base. ocular of as it is two-thirds. marked. well. dorso-median. a. the. on. segment of. exposed;. prominent･ little longer than. peg, articular is longer The丘fth. middle. meet. are. is. rather. with. as. barely. at. two. in front. The. produced from the. lobe. ocular. has. one. about. pseudorostrum,. lobe. of theocular. laterally. a. Thefirst the. a. furnished. marked. bears a notch 一and nearly two-thirds the. are. half.. depth.. the. constricted. of the. apex. the丘rst. expaned. hinder. and. than. The. somewhat. the. a. with. against. to丘fth. and. .animal leach. separated. third. The. furnished. and. line. the. animal. pos-. median. a. is. smooth.. anteriorly,. rounded. in. is. the. of. side with. doubled. :. background. angle antero-lateral leading back redge obsolete. is entirely. margln. 3･9 mm). carapace. The. lobes are truncated and ･dorostral All the free thoracic segments the. is. which. each. carina. of the little more. a. The. reticutate on. length. total. concave.. and. lower. in shape,. eyes･. nine. tooth. a且ne area. becomes. and. of the. shallowly. with. dorso-median. The. width,. is calcified･. depressed. lobe.. 30, 1962.. July. (length, about. marsupium. pits. somewhat. Asani.. at. shore. sandy. 10). integument. shallow. whole. the. is. notch acute. acute. the. times. one-half. rantennal. a. is two-sevenths. length. `The. for. marked. is frontal. the. of. with the. reticulated. There. portion. specimen. in life and. with. surface.. terior. female. adult. the. m,. nov.. sp.. 9,. 1. about. locality,. same. (Figs･ Holotype. depth. little. ; 1tS. shorter. one. and. external than. one-half angle. one-third. times. as. is developed the. basis. long into. the. as a. long. (inclusive. of.

(13) on. the. is. times. long. as. the. inner. as. edge･. the. long. ischium;. with. nine. hairs. plumous. The. asthebasis･ its external. angle. lamellae. and. hairs. on. long inner. the. is. one. bears. prolongation teeth. on. fringed. merus･. its. edge;. edge･. one-half. several. the. as. and. large. a. with. inner. the. on. merus. and. 41. lsland. Amami･Ohsima. from. obtained. of the carpus, of the distal end as is The three-fourths carpus. hyaline. narrow. with. as. one-fifth. level. the. reaches. furnished. and. prolongation). 一The ischium. Crustacea. Cumacean. the. angle. outer. {. C. Fig. um. 8,. CyclasPis. (length,. C: ･above. D: lateral. (length,. cat. cat. 3･9mm): of. sculpture view.. 118. amamiensis. E:. mm).. A:. sp･ lateral. view･ Paratype. carapace.. anterior. nov･,. portion. of. holotype. B:. adult anterior. adult body'from. male. female. body･. of. (length, above･. marsupi-. with. portion. F:. ca･ manca. from. 3･9mm) larva. =.

(14) 42. s. GAM6. is expanded. distally･. carpus,. serrate. hyaline. lamellae. The. outer. the. distal. on. is. propodus. the. on. about. three-fourths. and. furnished. The. dactylus. edge end･. long. as. serrations. with is two-thirds. the. as. and. small. long. as. as. the. propodus. basis. The 1ng. distal. the. length･. as. the. of. Brst. the. segments. together･ is twice. which the. carpus;. is. peraeopod. as. external. The. merus. long. as. is. angle. a. two-thirds. nearly is. the. broad,. long. as. two-thirds. ischium. as. remain-. wide. three-fourths. and. little produced. the. as. distally. and. as. beset. Zi. 腎＼. :At4Y＋. ･搬抱き l･ヽuJ･. ＼. 妻.u; ∨. 7rl /. ). ヽ+. E し-. --_I_. -.r'￣. -. 1. ノ. ＼. G. /. ＼. 形準. 噂. Fig･ um:. uropod. A:. 9･. ｢＼J. a. Cyclaspis. with丘fth. and. sp･ nov･,. amamiensis. B:. antennule･. third. sixth. maxi11iped･. abdominal. A. F holotype C-G:first segments.. adult to. female. fifth. with peraeopods.. marsupi･. a:. as. long with.

(15) on. teeth. small The. the. Cumacean. on. the. distal. The. end.. long. as is slender, nearly has terminal dactylus The. The and. length. the. one-half. six-segmented･ together･. ternal. angle･. furnished long. as. The merus. a. seta. with. the. as. large. moderately. dactylus and with. is nearly. two. The. minute third. shorter slightly is a fourth the of Tbe丘fth peraeopod is about The abdominal. two-thirds peduncle segment･. distal. is. about. and. splneOn. one. on. as. the is. of the uropod. the than. distal. seg-. the. ex-. on. seta. and is. the. edgeand The angle･. distal. inner. joints. two. preceding three. distal. outer. combined long splneS. moderately fourth. remaining the fourth distal. one-half. aplCally. basis. the. the丘fth. length. slightly. of. the. longer. 』蕊き､ lL i. Fig1 peraeopod･. lob. CyclasPis ち: uropod. amamiensis with. last. sp･ three. nov･,. paratype. abdominal. adult segments･. basis. together･ of. ヨ-. /. basis. together･. segments. and. The. segments. the. and. times. acute. together･. distal. the. and. ＼. /. first. and combined, propodus is about two-thirds carpus. the. are. remaining one. endopod. with. or the second distal segments. shorter. long. a. the. as. remaining. the. as. than. is much. The. of. remaining. little shorter. the. long. as. end･. long. as. the. than. as. the. and. a. There. edges･ distal. the. on. length. the. the. The. edge･. minute. a. and. than. the carpus. as. providedwith to. peraeopod. is. long. as. lateral. ones. than. is stout. one-half. fumished. and. short. each. splne. both. on. serrated. on. equal. longer. which. length･. the. as. wide. and. Of. than. longer. much. is. is. longer. is. basis. and. merus. carpus. One. splneS,. much. ischium. The. the. as. as. one-third. segment･ is. peraeopod The. second. ments. of the. is. carpus. 43. lsland. Amami-Obsima. from. obtained. propodus. dactylus･. a. Crustacea. male.･. A:丘rsl. last than.

(16) 44. s. GAME,. three-fourths. three. On. The. exopod. than. There. is. a. it reaches. The. are. is. dorso-median. is. The the. the. basis. nearly. second. and. Each. of the. fourth. of the. preceding. two. fifth. is furnished. with. as. long. the. as. third. of the. the. as. a. one. The. the. as. remaining. slightly. shorter segments than. much. the. as. and. than. one. one-. and. twice. long. as. times. one-third two. are. than. than. more. longer. together.. little less. a. the. as. long. as. teeth. small merus. and. is shorter. propodus. and. of. carina. as. the. on. about. than. the. as. carpus.. proporus･. remaining. fourth. of the. and. size dorso-median. is nearly. antennule. longer. distal. long. length. total. same. marked. There. little. is slightly is. as. basis. is. together･ is. long. as. is. segment･. peraeopod. is about. The. the. the. of. well. the. as. together.. carpus. of. long. as. almost a. third皿aXilliped. peraeopod. the. segments. The. each. The. two-thirds. nearly. one.. segments. is nearly. long as. basis. together･. is. third. peraeopod. distal. the. length. second. long. subtriangular; The eyes. The combined･ is longer second is twoISegmented ; the distal joint is about. proximal. The. end･. one-half are. mainflagellum the. as. distal. the. as. of. laterauy･. of the peduncle distal two segments. first peraeopod. The. by. side.. of the. ーThe dactylus. the. each. the. as. of. basis. basis. is. prominent.. of the. The. The. the. width･. concealed.. length. with. segments. as. are. the. segments. remaining. wide. as. on. The. long. distal. depth.. for. doubled. is. the. as. segments is. sides. than. more. distal. inner. lobe. long. the. line. median. a. one. nearly. becomes. ocular. a･s. and than. carina. thoracic. expanded. is furnished. long. as. remainlng. The. are. each peg. the third･. some-half. a. segment. than. four. segment. as. and. Brst. longest;. times. carina. without. is. carapace. animal. slightly. The. The. female.. the. longer. sides. The. The丘rst. than. both. on. serrated. ‥. more. and. free. of all the. is much. articular. third. and dist礼l. one-third. and. of the. the dorso-median. The丘rst. much. abdomen. an. Land. portion. carina.. animal･. fifth. the. is. which. of the. short. the. and. The. those. carapace･. the丘fth. the. curved. slightly. proximal at. 3･9mm). length. pseudorostrum. length. segments. segments･ la. the. endopod. about. depression･. shallow. than. the. as. half. of the. apex. combined. long. and. hinder. the. larger. width,. dorso-median. marked. ; in. the. much. third. at. the. is. portion. serrations. than. of the total. the. longitudinal. narrow. ･as. small. (length,. specimen. times. well. length. male. two-sevenths. three-fourths. are. serrations. two with is barely longer. adult. little less. ･a. are. interspersed. Paratype. whole. there. edge. distal. the. peduncle;. edges.. -lateral. land. the. as. inner. the. splnules. por亡ion･. long. as. inwards･. shorter. the丘fth. is about. than. the. distal. than. the. two-thirds. The The. segments. The fourth. basis. long. nearly third. the. is. of the. distal as. basis is. together,. remaining as. Brst.. the. as. together.. second.. together･ thefifth･. remaining. is much. long. as one-half distal segments. whereas segments. remaining.

(17) the. On. The. On. splneS. On. splne. the. inner. the. distal. inner. seta. end. distal. 1892;. 1904). 1948) and. C. flugida from. those. C. jlugida. and. is. peraeopod. 1ike. short. Gulf. of. HALE. (HALE in. is narrow; provided. 1. Material:. distal. the. of the shallow small Kasari. July 23, 1962. 1. 8. bottom,. depth. 1? larva,. with. lm,. about from. obtained. from. tide-pool. the. the. Nannastacus. locality, the. Adult is. pace. fifths. one. female covered. of. reglOnS,. the about. and. and provided is a depressed terior free. dorsal thoracic. lateral. total. with with. a. area. ll,. with. upwards. portion. the. splne. and. the. is much. rear. much The. on a. the. the. sandy. 29, 1962･. July. 1. and. at Asani.. shore. reef. coral. coral. ♀ juvenile. 1. the-. on. manca. 30, 1962.･. July. 12) 16-21･. 33,丘gs･. pl.. branchial. on. of each. antennal and. laleral. little gapplng. the. postero-dorsal branchial. swollen backwards. is deeply. notch. provided borders.. above. over. with The. and. swollen marked There. portion. The. region. the一色rst. stout. pseudorostral bellow.. than.. well. and The. concave. a. branchial,. much is. carina. The. two-. more. slightly are. cara-. than. the. across. regions. The. :. less. little. a. and. dorso-median. hairs. produced. length. the. The The. 2･Omm). (length･ about. as. two. produced. hairs. and. 356,. p.. wide. hairs.. is. tooth-. CALMAN. gibbosus. depth.. long. at. first. the. of. the. on. from. Tinase･. sandy. marsupium. as. times. of C･ laeL,is. 14, 15･. with. three-fourths. distin-. be. deposited. level,. granules, minute spiniform and is length It the of animal. widest. with. segments.. angle. furnished rected. spe?imen. one-fourth. furnished. and. (1962). (1911) 173,丘gs･. p･. it may. Nannastacidae. Nannastacus. CALMAN. gibbosus. GAM6. nudus. 1944,･. (HALE. (C･ herdmani). one. water. specimen),. (Figs･ N･. THOMSON CALMAN. HALE. But. obtained. at. shore. Family 4.. minute. border･. sand丘1m. low. larvae,. manca. sandy. same. the. near. (holotype. marsupium. with. on. end･. juvenile, 3. 1 sex?. adult,. tooth. herdmani. C. cretata. (C･ cretata) or. minute. a. C･ laeuis. C･. short. a a. of the first peraeopod C. herdmani the basis. and. two. eight. with. to. Australia･. carpus. 早 juvenile, obtained. bottom at. 1944) from. strong. the. times,. subequal. has. and. inner. Zealand,. in Ceylon,. the. splneS. related. New. C. cretata. with. on. projections. closely. the. and. furnished. on. 45】. one-half. than. distally. and. hairs. from. follows:. as. tapered. Manaar. and. interspersed. splneS. also. 1907). nine. is tapered. plumous is vary. species. CALMAN from. (CALMAN. guished. and new. hairs,. endopod. exopod. one. little longer. a. and. twenty-three is. than. more. plumous. The. and. end. The. (THOMSON. eleven. with. The. Remarks:. segment. border･. border･ the. on. is slightly. lsland. Amami-Ohsima. from. obtained. uropod. abdominal. It is furnished. rami.. the. the. last. the. as. Crustacea. of. peduncle. long. as. Cumacean. aplCal. pos-. second antero-A. splne,. lobes ocular. are. lobe. and. dト is･.

(18) 46. S. GAM6. Fig･. Nannastacus. 11･. 2･Omm):. ca･. broad. and. large. ･. long. one-half. ･of the丘rst. wide. The. lorlg. The. than. the. than. third. segment. second;. the. of the. two. is much. than. more. prominent.. The. The. dorsum. The. dorsum the. of is. second. as. narrowed. successively as long the total length. than. the. others. is. antennule. The. combined.. second. is. segment. than. more. slightly. longer. little longer. a. and. Brst. The. little. a. is. is three-segmented the. flattened. two. and. splneS.. as. of the. above.. are. segments. peduncle; is minute.. one. end. strip･. one-half. 且age11um. distal. narrow. is longer. segments. main. are. with. than. segment. two. The. third.. the. exposed. a. from. segments. sides. as. of th白peduncle. distal. the. the. than. thoracic. the. and. longer. Bfth. segment. as. only. is much. animal.. The丘rst fas. of all the free. distal. (length,. marsupium. with. body,. of. each border.. anterior. very. abdomen. the. of. on. short and furnished The carapace. third to丘fth. the. as. the. female. portion. eyes. carapace. is. segment. is also. second. the. as. of. Adult. anterior. three. middle length. combined as. B:. view.. with. the. CALMAN.. gibbosus. lateral. provided in. teeth. The. A:. little longer. a. is single-. accessory且agellum. ･segmented.. The. basis. distal. remaining. The the. -the. and. the. carpus.. furnished of. the. The less. a. with dactylus.. than. second as. long. long. together.. segments as. dactylus. long is. the. as. about. distal. curved. peraeopod as. long. is. first peraeopod. three-fourths The. as. as. the. long. as. the. as. into. is developed angle the basis. The ischium. external long as. as. one-third. about. three一丘fths. carpus,. which. is. a. is. little less. a. propodus.. of the distal. remaining. The. is three-fourths. as. basis. ischium. is. is nearly. maxilliped together.. segments. merus. long. as. third. which. .prolongation The short.. than. the. of. is. the. splne. as. distal. is. Which. long. segments. one-half. is twice. The. carpus.. as. than. merus. one-half. three-丘fths. remaining. less. slightly The. as. nearly. as. the. as. equal. to. the. The The. as. the than. propodus. the丘rst.. together.. long. is longer. propodus. long. as. as. long. and length. basis. ischium. is. is.

(19) on. Crustacea. Cumacean. the. from. obtained. #. lsland. Amami･Ohsima. 47. ＼. r｢つ. B. E. 潔 L?. 4. C. ､＼. I)JL>JLつ. L3. J. 3. a. i. JJ 〇. D. J. 淘/. 1. ｢へ･. Fig.. 12.. antennule. sixth. with. more. on. two. carpus. long. than. as. one. and. about the. third. is as. one. and. and. the. times. furnished. seta. on. the. long. as. the. four. splneS. distal. the. uropod. inner. long. as. of. with. marsupium. A:. :. H:. peraeopods.. long. The. and. the. as. merus. uropod. and. slightly. is combined. is it propodus; with setae provided five terminal splneS, and unequal. The. the. dactylus. dactylus.. is three-fourths. furnished border. as. srines. the. serrations. border. and. peduncle On. female 丘fth. dactylus. and. lateral. length. with. inner. as. twわ. with. exceed of which The peduncle of the and. to. times. one-half. propodus. the. segment. C-G:丘rst. segment.. one-half. surface. Adult. CALMAN.. maxilliped.. abdominal. The. short.. Nannastacusgibbosus B:. the. on. endopod with. with. long. as. proximal is. two. splnules a. seta,. a. as. the portion. last. abdominal and. a. with. as times and one-third on both lateral borders,. short. splne. and. a. long.

(20) 48. s. GAM6. splne. distal. the. On. The. end･. is very. exopod. short. the middle endopod･ Which exceeds of Male : The (length, 2.2mm) specimen about male is Ohsima Island larger described as than that much splne,. Bay. Kii. of. The. Peninsula. long. inner. Remarks: to. allied. N.. the. coral. 5? water. long. reef. the. 8,. July. The. granules; are. ments. the. much. triangular. one. The. a. and. the丘rst,. line. of. the. animal. furnished. subtruncated, for. with. Battened. with. three. distance. the. small. combined. on. eyes with. length. nov.. sp.. (length, covered. fromabove a. the. times. round. distal. all. splneS as. one-twelfth the. end.. long free. and as. the the. are. of. pseudorostral. meet. in front. is. is･. portion. The. is rounded. lobe. the. which. swollen.. rather. ocular. the. carina. posterior. The. thoracic. disc. is almost. width,. angle. The. teeth.. there. is one-third. across. seg-. round. carapace. length. The. small. and. broad. and. lobes of the. are. ocular. carapace. segments. :. dorsum. dorso-median. marked. well. the. segments. a. with. antero-lateral sides The antero-lateral. each. On. segments. abdominal fourth free thoracic is provided. 1.3mm). about. many皿inute with free thoracic the. on. and. and one-third It is widest. rod-like. of. low. near. 15). length.. one. concave.. about. delevelー. water. bottom. sandy. marsupium. which. depth.. and. margined. film. sand. low. near. Siam.. and. and. whole. and. the. the. carapace. third. the. is deeply. notch. tide-pool. from. of. the. on. hairs,. for. one一員fth branchial reg10nS. The. the. 13, 14,. the. those. characteristic. and. margined. lobe. granules. times. a. from. with. on. smaller. median. length. antennal. obtained. As seen of the short peduncle. in shape furnished and with. top. without. 6,. semi-transparent. than. carapace. general. N. gibbosus.. umbellulljTer. specimen. thin,. minute. transparent. at the. total. is. the. 1911) in. (CALMAN with. small. Gulf. Nannastacus. female. adult. integement. is very. 25/26, 1962.. (Figs･ Holotype. end... Which_. lsland. identical. obtained. Peninsula;. Kii. splne,. July 22/23, 1962. 2. at Akakina.. shallow. the. be 1. with. distal. terminal. AmamトOhsima. of Siam. it may. times. interspersed On. spines. from. Gulf. the. as. three-fourths. and. long. long. as. a. with. endopod.. specimen. but. of Kasari.. at. Tanabe. furnished. splneS. a. with the. as. from. CALMAN. unequal. with. female. adult. 5.. are. Amami-. from. is nearly. eight. with. 早 (with marsupium),. Distribulion:. of. from. nudus. and. two. about. provided. as. (with marsupium), level. and and. bottom. the. on. and. differences,. with slight Material: 1. posited. endopod. short. gibbosus. is. furnished. one-half. The. N.. of the uropod. peduncle. border,. very. is a little less than. on. terminaf. specimen. is rounded. carapace. The. peduncle. is. of the. The. edge･. segment･. the. on. exopod. form. long. a. 1962).. angle. outer. the. as. splnules. The. (GAM6. antero-lateral. on the splnule last abdominal as. has. and. the. is nearly丘ve一.

(21) On. long. as. sevenths segments. are. The丘rst. and. The. to. third The. Cumacean. the. Crustacea. the. as. decreased. successively. is about. abdomen. lsland. 49･. The first three and the sides are prominent. a line dorso-median a with without median carina.. are much raised dorsally than the carapace. and wider. the second are. Amami-Ohsima. carapace. provided fifth. from. obtained. three-sevenths. in width. in depth.. and. of the total length. of the. animal.. D 13･. Fig･ supium from. D:. Nannastacus. (length, above･. anterior. umbellulifer. 1･3mm):. ca･. Paratype portion. of. adult body,. A: male from. sp.. lateral. nov.,. (length, above.. holotype B:. view, ca.. adult. anterior. 1.4mm):. female portion. C:. with. of lateral. mar-. body, view.. The.

(22) S. GAM8. 50. Brst. four one. -than. is. of the. almost. same. long. the. times. as. little. than. three-fourths. a. on. lateral. the. the. on. granules. small. coveredヨwith. sma11且at葛spines. less. as. the. as. The. fifth. fringed. and. are. splneS. such. little shorter. a. segment･. preceding as long. surface. and. margln. fifth is. The. size･. two-thirds. and. segment. it is. are. segments. segment; a. with also. last. row. of on. arranged. A. ㍗醍㌔-. k'･顎｡. ia. ･. ◆●. ○. ＋I D q. ■. ウ. o o ●■1. ■. つっ. .∼′′. :-･･. ￣､.. ゝ nlH 汰管博. J.bO:.｡. _占=l. fI. D. C. -. ∼ヽ∫. ■ .. 1P.. ■■. ･.･'=':.' ●●●. ･. :. ● 一. 1 .＋.4 ._. .-■●■. 4. v'./,.I. ■ ●●● -. ･.. ,. I. ■, ⊃. ∫. I.I.'｡∴∴. K. Fig.. 14. A:. supium: granules small. Nannastacus. hyaline. 丘rst to丘fth. umbellulifer and. pseudorostrum. on丘fth. on. peraeopods･. sp,. nov･･. holotype. antero･1ateral C: minute. segment･. abdominal hair. ノー. carapace･. L:. uropod. E:. antennule･ with. sixth. female. adult. lateral. angle,. granules. F:. third. abdominal. with. view･ on. carapace･. maxilliped･ segment･. B:. marl. small D: G-K:.

(23) ()n. the. Cumacean. the. dorsal. anterior. Crust.acea. ･small granules. The Brst segment ￣two. segments. times. is. long. twice. is. 一The accessory月.agellum basis The of the. joints. which. is. 'than. the. :bali. about. the. as. basis. long. --ischium, which is less than one. lateral. splneS. llittle less. than. a. is. times. long. the. as. as. little longer. a. of. the is. carpus. length. one. the the. third uropod. the. outer. and the. times. long. border･. and on. endopod. serrations is. There. two-thirds. and. on. a. the. with. the. longest. terminal. the long. the surface is about as. and long. and. than. and. the. -without on. round each. male. specimen. (length, about. of the total length It is widest across the. one-third width･. one-fifth. branchial. abdomi-. serrations. the. as. such. peduncle serrations as long. one-half. long. the. as. small. endopod. three-fourths. the. of. exopod. adult. more. NmuCh half times. a. fourth. few且at. a. about. The as is nearly three-fourths endopod･ exopod furnished a long stout terminal with splne about of. three. seven. splne. the. The. the last. as. with. stout. is. second. fifth.. furnished. outer. The. provided. together.. as. the. as. combined.. propodus. than. more. basis. together･. as. propodus. distal segmsnts. about border. The. dac-. The. distal. the. granules. margln. six. with. are. the. carpus. The. merus.. segments. one-third. as. much. and is. as. The. the丘rst.. as. distal. and. long. as. long. as. dactylus. the. of. times. There. distal. Paratype. one-. remainlng. long. as. basis･. the. as. as. the. as. times. the. as. remainlng. the remainlng. as. on. border.. the. is. propodus.. long. as. long. as. long. one-third. On. than. serrate. inner. remaining. proloflgation. dactylus. The. two-thirds. as. two-thirds. one-half. long. as. the. On. the. -and length. eyes. into. propodus.. and. is about. The the. and. furnished. and. The. as. than. peduncle. ･splneS. lone. is minute.. the. as. carpus. two-丘fths. one. four. ￣nal segment, inner 一ion the. ニaS. peraeopod. little longer. a. The. L,On. one-half. one. one-third the first. one. and unequal splneS end, of which is much more dactylus･ exceeds the length the of The third peraeopod is much longer The than the second.. BOne. lis. long. as. is short･. is. is. merus. three-fourths. and. two-thirds. and. the. is about. less than. dactylus. long. as. The. segment･. than. peraeopod. is slightly. -merus. third. is developed. angle. the. as. r･distal segments. less. the. whereas. i畠five-sixths. external. The. 二is less than The ischium. and. distal. single-segmented.. together.. -ltylus is about The second. than. the. as. one. with. propodus.. the丘rst. of. long. as. is three-segmented;. second,. little shorter. a. and. the. as. the as. less. 51. fringed. and. is. anuennule. mainflagellum. maxilliped. and. one-third. merus. The. third. together. long. as. long. as. of the. Island. is rounded. is slightly. second. The. third.. Amami･Ohsima. margln. posterior. peduncle. The. the. as. and. ･pdistal. the. of. combined･. long. as. The. margln･. from. obtained. times. reglOn. is. The. end. a. of the. ocular. of the. animal. :. The. and. is. carapace one. and. one-. is nearly portion, middle which dorso-median line is well marked. The is rounded antero-lateral angle. little swollen. like that in the teeth. small distal. the. depth.. 1.4mm). lobe.. female. The. There. pseudorostral. are. three. lobes. large meet. in.

(24) S. GAM6. 52. & 7”i&&. //. ＼. 野/. ＼こ. D B. G. く:=/. Ⅰ. Fig.. 15.. rostrum. The. to. of the. 丘fth. lobe for hyaline. characteristic. carapace. The. and. on. J:. the. combined. dorso-median. line.. uropod. distance. hairs. Br豆t. small free thoracic. length. all. long as as the one-half laterally. The丘rst segment. than. a. of. nov.,. lateral. angle,. peraeopods.. ocular. sp.. umbellulifer. antero-lateral. and. E-Ⅰ:丘rst. front. Nannastacus. the. carapace. is only. adult. paratype. B:. view. with. sixth. are. abdominal. scattered. A. :. C:. antennule･. one-tenth. about. :. male. pseudo-. antenna･. segment･. as. long. on. the. as. the. carapace･. dorsum. of. is much. longer. the. segment.. free and exposed. thoracic the. segments. sides dorsally. are. and. a. little furnished. expanded with. a.

(25) On. Tbe. is nearly. The丘rst Fas. than. one. and. with third. of. distal. The. times. The. carpus. long. as. is. `three-fourths the. as. as. the. is. less. one. and as. second. as. each. of. long. the. as. a. is nearly. two-thirds. two-thirds. is nearly. merus. re-. as. The. dactylus. the. terminal. stout. basis.. the and. about. splne. one-. and. as. propodus, is. long. as. one. long. as. one-丘fth. long. merus･. with. is. and the. one. and as. one-half. long. as. about. segment･. stout. and. The. one. basis carpus. longer. slightly is. and. than. one-fourth. is. Of. one. which. is nearly. exopod. terminal. both. spiniform. the longest. is. Which. with. the. about. as. equal. remaining is much. the. fifth.. The. serrations. on. end. one-half. long. as. borders･. distal. is about long. as. as. of. basis. threeイourths. lateral. On. the. as. stout. long. as. than. furnished. two-thirds. splne,. with. more on. a. basis. the. and. long. as. times. one-sixth. and. peduncle. times. peraeopod. serrate. fourth. the. as. one-half. is much. and. the. splneS,. and. uropod. distal. the. terminal. and. dactylus. long. as. fourth. one. segment. of which The. one. The. and. than. than. more. than. of the. last abdominal little longer. unequal. is. third. pedunclc. border,. combined･. to宮ether･ the. merus. The. The. together･. segmegts. the. as. theむst.. as. propodus.. little less. a. long. as. long. as. distal. remainlng. times. peraeopod. ･distal segments than shorter The. the. as. dactylus. as. third. third. witha. times. provided. peraeopod. long. as. The. a. end. as. less than. and The. is. which. the. as. and. three-fourths. and. times. is. distal. than. more. is stout. one-fourth. long. as. propodus. the. less. splneS.. together･. ischium,. long. propodus. than. orle. the. the. as. times. slightly. segment.. The. the. first peraeopod. distal segments. remainlng. than. is. The. third.. less. slightly. Thesecond. is much. maxilliped. animal. segment.. together.. the. of. flattened. small. segments. basis. half. long. the. the. of. preceding is. antennule. the. as. 53. the丘fth.. combined･. long. as. the. as. as. of the. segments. times. one-third. long. lsland. length. total. long. as. as. peduncle. two. basis. maining. the. the. distal. the. as. two-thirds. of. AmamトOhsima. of the. times. one-half. about. is margined. The. ･as. is. from. obtained. three-sevenths. and. segment. as. segment. is. one. last segment. long. Crustacea. is about. abdomen. The丘fth The. Cumacean. the. endopod inner. the. there. two. are. long. as. as. the. as. furnished and endopod exthe length of the. the to. opod.. Material: from. July. the. coral 29, 1962.. 1?. with. sandy. (holotype. marsupium. bottom,. depth. 6.. Cumella (Figs･. FCmella. sp.,. GAM6. Holotyp,e pace. is rather. (1962). p.. ovigerous compressed,. 197,丘gs.. female well. 32,. lm,. about. the. rigida. sp.. 16,. 18). 17,. 1. specimen), sandy. 8. adult, at. shore. obtained Tinase･. nov.. 33.. specimen calci丘ed. (length, about and. covered. with. i.8mm) minute. :. The. cara-. spiniform.

(26) S. GAME). 54. ′IJ. ♂. Fig.. from. 1ateral. a. longitudinal are. portion depressed. tennal. much. which. long. notch. as､. the. two-丘fths the. is shallowly. a. with. ;. both. width, concave. of the. with total. which and. The. the. across. one-fourth. dorso-median lateral. elevated. is nearly the. 1･6mm):. two-thirds. antero-lateral. the. of there. sides The ridges･. of the. middle. are. length. animal. and. the. depth･. angle. with. carina. sides. postero-lateral. length. of. C:. above･. marked. well. length･ on. 'margined. are. from. ca･. mar-. with portion. anterior. postero-dorsally'widest. whole. depressed. body,. of. B:. (length,. male. adult portion. raised furnished. sQPleWhat. is about as. anterior. and line for. areas. carapace. twice. D:. is. reglOnS. Paratype. female. adult. 1ateralviewI. A:. 1.8mm):. holotype. nov･,. sp･. rigida. ca.. above.. view.. It. granules.. A. Cumella. (length,. supium body,. posterior. 16.. /. much of the. less. is rounded･. The. than an-. The.

(27) On. lower. few. is. margln. base,. at. stricted a. Cumacean. the. hairs. truncated pseudorostral. serrate. median. from. obtained. the. as. The. eye･. seen. from. above,. lobes. meet. in front. width. beset. and. as. 551. eyes,. from. seen a. con-. round,. with. broadly. upturned,. for. lobe. ocular. is. with丘ve. is not. truncated. the. of. lobe. ocular. pseudorostrum. obliquely. lsland. Amami-Ohsima. The. thickened.. and. long. as. almost the. on as. not. Crustacea. The. side･. distance. about. A. /ヽ. ′＼. ￣＼′￣ヽ. ･ハヘへ･｢. /ヽ. へ1. D. ｢17.. ｢ニ′､＼ハ｢. で鞠. 1ニO:しノ11 .へ/ヽノ＼. W. /ヽ＼ rl､＼. ヽ1へ. 左⊆タグ. Tい1一. >3享2:,,33 i'3,:吉声B. C. ノへ.. ハヘ. Fig･ A:. 17･. Cumella. sculpture. carapace.. maxilliped. segment.. of. C:. rigida. upper. sculpttlre. FJ:丘rst. sp.. portion. Of丘ftb to. fifth. nov.,. of. holotype. carapace.. abdominal peraeopods.. adult. B:. female. K:. uropod. with of. sculpture D: segment.. lateral. antennule. with. sixth. marsuplum: of portion E: third. abdominal.

(28) ホ'56. S. GAM6. to. equal. one-twelfth. The -than. combined. one-half. carina. long. as. are. segments is. fourth. The the. and. animal. four. less than the. long. long. long,. first two long. preceding. two. segment. distal. the. the. with. as. first. as. a. well. are. thethird. length. and. is. each. is nearly. is about. sixth. of 丘rst. the. on. The丘fth. The. length. total. line. in. fourth.. together.. segments. the. as. subequal. the. or. is. The丘fth. carapace.. dorso-median. marked. The. carapace.. segments.. long. as. one-half. segments. as. the. the. as. wide. as. two-thirds. the丘fth.. as. The. ･as. The. than. dorso-median with distinct. The丘rst. three. as. wide. little longer. a. a. somewhat as. preceding. as. one-half. is. segments. are. the. little less. a. thoracic. It is provided. The. of. each. furnished. and. segments.. ･slightly long as as. is. free. sides ￣raised dorsally and. about. abdomen. carapace.. carapace.. line.. than. narrower. much. the. much. narrower. the. as. of all the. as. longitudinal. a. with. three. long. as. length. two. The. third･. is three-fourths. antennule. The second combined･ is three-segmented;. segments. is minute･. third. of the. peduncle. mainflagellum. the. whereas. the. of. The. is. than. more. as. long. as. is. first Lsegment. the. is small. accessory且agellum. two-. and. ･segmented.. The. basis. ￣maining The ischium. is short･. its. carpus; The. is. basis. The. ischium The. merus.. slightly dactylus. is provided. has. the. The. distal. segments. isshort.. The. times. one-half. long. as. little. a. and. long. times. terminal. carpus. twice. long. stout. longer. and. long as. inner. the. on. than. more. thanone-halfas. more. one. basis. the. as. the. as. and. as long one-half hyaline且attened with. hairs. and. serrations. border.. outer. than. furnished. and. two-thirds. and. with. of. the third. as. long. is. peraeopod is. little. a. together carpus times as. as. and. the. as. border. the the. as. carpus. and. dactylus.. splne. as. than. long. as. asthe. curved. as. splneS,. the. than. more. than. more. slightly. The long. as. about. three一丘fths. two-thirds both. on. serrate. is much long as. long. distal. unequal. The nearly. one. basis. one-half. length. is much. than. second. first･. and. with. long. as. the. as. dactylus･. The. and. and. one-fourth long. propodus. less. together. is very. carpus. The. merus.. peraeopod. segments. is about. the. re-. border.. long. as. the. on. serrated. and. the. as. the inner. on. times. one-half. times one-half distal end. is much more. and On. splne. border,. Outer. prominent. one. the丘rst. distal. near. splneS. than. short. of. remaining. is. long. as. hairs. with. and. 一one. than. more. furnished is. merus. angle. more. a. with. The. The. external. propodus. furnished. the. is much. of the third maxilliped distal segments together and. the. propodus･. and the. Of which. the. as. The. provided with distal one. longest. the. remainlng. and. ischium about. is nearly six much. the. as. The. merus. dactylus. long. as. as. borders.. lateral. morethanaslong. propodus. long. as. one. one. lateral. and splneS the. exceeds. dactylus. peraeopod as. the. is. remaining. a. little distal. longer segments. than. the. second. The together.. The. basis. fourth. is. per-.

(29) On is. aepod. peduncle. near. rations two-thirds with and laS ,a. longl. as. three. as. two. little serrate. ･distal end. Paratype. longest. distal. adult. little less than. two-thirds. than. the. is. longitudinal. rows. borders. little. a. a. and is. splne. two. total length. of. the. on. border,. outer. is about. three-fourths. than. the. long. splne. a. and. (length, about. interspaced. splneS. shorter. the. exopod･. l･6mm). :. as. abdominal fringed with. serof small is nearly endopod. The. short. long. as. last. and. surface.. fifth.. the. border. with provided a'nd a little serrated the longest Of which. expod. of the. than. and. specimen. male. are. 57. lsland. longer. inner. dorsal. the. spines,. lateral. the. on. peduncle inner the. The. much. There. on. and. Amami-Ohsima. little shorter. a. end.. endopod. on both. The. is. and. serrations. distal. unequal the. as. the on. serrations. with. long. border. outer. third. uropod. distal. the. from. obtained. the. with on. serrations. than. the. of. furbished. ･segment,. small. Crustacea. little longer. a. The. Cumacean. the. endopod,. carapace. and. twice. the animal. The. the. On. is as. long. √しJ ′J∫ノ. ”LL. ノJ一ノ. I. ∫ レl. J. I. J. ヽ′. :･ J/･J.. ′+. ′J. /. ､ノ. V ′. ＼. ♂. /メ. &. F. .!1. ノ .･l. /. ㌔ ((/. Fig. peraeopods･. 18.. Cumella F:. uropod. rigida. sp･. with丘fth. nov･,. paratype and. sixth. adult abdominal. male:. A-E:丘rst. segments･. to. Fifth. a.

(30) 58. s. GAM6. the. as. with. minute. The. dorsal. with well in. low. a. for the. shape,. constricted. large. lateral The. is. distance. a. The than. about. line. cealed. and. The. the. first three. the. fourth,. basis. The. provided The. on. nearly The. nearly-one gether. The. is. terminal. splne. animal. less. of` than. is about. segment. times. as. long. longer. The. as. long. long. as. the. teeth is twice. as. the long. the. propodus･ dactylus･. long. the丘rst.. as. distal. segmentsb. and. the. as. as. the. the. inner. teeth. with. as. remainlng on. carpus”. long. as. as. ischium. The. provided. two-thirds. than. outer. carpus. as. The. merus･. one-half. one-half. than. more. much. and. tharL. more. slightly. the. as. than. about. the. with border.. with. propodus. such and. dactylus.. peraeopod. fourth･. is much shorter than the second and The basis of the third peraeopod. as long as the remainlng times and one-third The丘fth is than the peraeopod much shorter. of. little･. Each. little. a. together.. merus. more. than. more. is much. the. as. hyalineflattened. peduncle. a. of the. one-half. stout,. long. as. nearly. provided. of the. are. carapace.. last. and. segments. long. as. slightly. stout,. one. distal. propodus. stout. and. the. con-. partly. segments.. is. and. The. and. and. third. length. a. and. twice. peraeopod. as. the. four. the丘fth.. is large. remaining basis. than. dactylus. long. as. the. as. is. is large. together. the. as. The. second. basis. peraeopod. border･. with. is slightly more a longitudinal with. together.. segments. Grst. longer. inner. the. carpus.. the. long. smooth. lobe･ ocular. of the. length. total. length,. is about. third皿aXilliped. distal of the as long. is one-fifth as is long, much. than. antero-. the丘fth.. as. remainlng. the. and. as. wide. the. in. with. is entirely. segments. the丘rst. on. subequal. little shorter. a. of the. three-fourths. teeth. is. long. line. is about. segment. basis. The. dorso-median. a. as. line isu. provided. are segment of the丘rst The丘rst three segments. sides. dorsum.. margined. rectangular. and. It is provided. is about two-thirds little less than one-half. a. with. as. The the. The. is. which. two-thirds. and. The丘fth. abdomen. furnished. The. median. the. of. lobe.. ocular. thoracic. carapace･. the. exposed. only. and. on. dorsum･. angularly. concave. the. as. the. Of the carapace in front meet. free. the. of the. length. and. long. as. of all. length. dorsally･. raised. truncated,. are. one-half. the. on. notch lower margln. which but. the. than. wider. side. lobe is large, almost. ocular is. The. length. the. one-half. much. antennal. rounded. lobes. combined. median. as. The. pseudorostral. for. base,. It is covered in the femal.. is. area. is inconsplCuOuS,. carina The. length･. at. eyes.. angle. median. whole. is depressed. there. depth･. the. as. wide. than those smaller On each dorso-lateral. horizontal.. reglOnS. The. as. little. a. almost. posterior. ridge･. marked. seven. is. outline the. lessthan are. which. granules,. and. middle. is slightly. which. width,. the. uropod. is. one. and. one-half. much is very. distal. than. more. large. segments. and_ to-. fourth.. times. as. long. as. the. last. on strong serrations the inner border, segme叫furnisbed with of distal one is border is also serrate･ The endopod which ; the outer spiniform is two-thirds as long as furnished large the peduncle three and teeth with. abdominal. the.

(31) on. on. inner. the. Crustacea. Cumacean. the. border. three-fourths. and. long. as. the. hairs on with small as long as the endopod, a with short and a long. less than furnished. Remarks:. The. from. Tanabe. cribed there. are. new. species Kii Bay of. differences. some. 59･. is about One distal splneS, Of which unequal border is a little serrate The outer endopod･ the. furnished. and. lsland. Amami-Ohsima. two. with. as. from. obtained. little serrate. a. Peninsula. between. distal. male. due. be. little･. a. borders. and-. end･. C〟∽βJJα sp･. as. It may. them.. lateral. juvenile. like the. is. exopod. both. on. the. On. splne. is very. The. portion･. middle. 1962), but. (GAM6､. to. des-. specimen. the. growth. obtained Akakina･. from. vari-. ations.. 28?,. Material:. below. just. bottom. 19. 1?. ovigerous, level, water. low. 8,. the. 2. 6 juvenile, at. shore. sandy. sandy. July 25/26,. 1962.. 1? depth. (holotype specimen). ovigerous lm,. about. the. shore Peninsula.. Kii. Distribution:. DimorPhostylis FACE. asiatica,. LoMAKINA. D.. asiatica,. GAM6. D.. asiatica,. HARADA. Material:. 1. 8 obtainedbynight. Izu. the of Peter Tamano, Peninsula,. 8.. lm, 1. 211;. (1958b). p･ 48･. (1962). the. at. 100･. 169,丘g･. p･. 9;. 59,fig･. pl･. 1 the. 8,. 1. sandy. 6 juvenile,. (1962). Sikotan. Great, Kochi,. DimorPhostylis. GAMe･. echinata. Mat｡rial: about. 45-47･. surfacetow-net. Bay. Distribution:. Dimorphostylis. 144, Abb･. s･. pier. of. Naze. the. 27, 1962･. July Bay,. (1921). ZIMMER. asiatica. (1945) p. 220,fig･ (1955) p. 153; (1958a) p･ (1958) p. 387; (1960b) p･ 118, (1960) p･ 203,fig･ 2･. asiatica,. D.. sagami. bottom,. sandy. 43･. D.. Harbour.. DimorPhostylis. ZIMMER. asiatica. coral. Diastylidae. Family 7.. the. July 30, 1962･. Asani･. at. sandy. from. obtained. Naze･. at. from. obtained. the. Vietnam･. GAM6. echinata 37, 38･. from. 早 juveniles, obtained shore. Kuril). (Southern. ; Formosa,. Nagasaki. 51,figs･. p･. lsland. the. coral. sandy. depth. bottom･. 27, 1962･. July. lo?ality･ the. same. shore. sandy. atAsani･. July 30, 1962･ Kii. Distribution:. Peninsula.. Literature CALMAN,. W.T. 1902. 1907.. 1904･ Ceylon On. of Copenhagen. Report. Pearl new. or. rare. Museum･. Cu血acea. the. on. Oyster. Fisb･,. Crustacea Part. 1904, of. =･. The. by Prof･ HERDMAN, collected 159-180, Repリpp･ pls･ Suppl･. the. Order. Families. Cumacea Bodotriidae･. from. the. at. Ceylon,. 1-5.. CollectiorL. Vaunthompsoniidae,. ;.

(32) S.GAM6. 160. Leuconidae･. and. 1911･. On. Trans･. new. Copenhagen L.. S. 1958.. Part. i)p.311-398, Cumac6s. gin., On. T..84,. 1945.. 占Ⅹp. et 亡GAM6,. 18, Les. some. Soc‥ London･. Zool･. Crustacea. rare. Museum･. IbidリVOl. 下AGE,. or. II･ The. pp･. Families. 1-58,. pls.. from. theCollection. Nannastacidae. 1-9. ｡f. Diastylidae.. and. 32-37.. pls.. du. 18,. vol,. theOrderCumacea. of. plankton. des. nocturne. d,Annan.. c6tes. Z｡｡1.. Arch.. 165-223,. pp.. ,figs..ト43. Crustacea of Cumacean. species. 67, pp. 383-389,丘gs. 1-2. Five 1960a･ new of species from Sagami Bay, astylidae). from. Sagami. Bay･. Zool･. Mag･,. vol.. 1960b･ 118,. Cumacea･ 59. pl･. 1962･. (pp･. On. Seto. the. Marl. On. vol.. three. new. Dimorb々ostylis (Di-. in. Colours･. ⅠⅤ, p.. vol･. (In Japanese).. from. 10, pp.. Genus. 101-111,丘gs.ト8.. lllustrated. Tokyo. Crustacea. LabリVOl.. 69, pp.. Zoologica. 1-123)I. pls･. cumacean. Biol.. in press･. Ibid.,. Encyclopedia. 1-346,. Crustacea,. cumacean. Tanabe. Bay,. Kii. the. southern. Sea. Cyclaspis.. Rec.. Peninsula.. Publ.. 153-210,丘gs.ト40. of Cumaceafrom. species. JapaD.. of. Crustaceana. BALE,. H･M･. 1944･. Australian. MusリVOl. 1948･. 8, pp.. Rec･ HARADA･. 1-60.. Cumacea･. No･. Australian Mus.,. S, Aust.. I･ 1960･. Cumacea･. 63-142,丘gs.. Fauna. Cumacean. Dimorphostylis･. 9, pp.. vol.. Rep.. Sci･. No･. 7･. The. 14,. Further. 1-42,figs.. of. notes. Genus. the. on. S.. Aust.. Cyclaspis.. 1-21. Family. II･. Japan. Tokyo. Genus. Kyoiku. Diastylidae. Daigaku,. (Part 1).. B,. sect･. 9, pp.. vol･. Genus 199-225,. 丘gs.1-12,. KEI-,. Improved. S･ 1941･ 7,. vol･ LoMAKINA,. method. ll-14,fig,. pp.. N･B･. 1955･. U･SIS･R･,. T･. 1958a･. Cumacea. Explor･. Far. 1958b･. of. from. Cumacea 18,. marine. Far-East. 112-165,. pp･. the. of. Eastern. Cumacea. collecting. Rec･. organismsI. S. Aust.. Mus.,. 1.. Seas. of. 1-15･. reglOnS. Of. of. Zool.. Inst.. Acad.. S°i.. (In Russian). Kuril-Saghalin. the. U･SIS･R･･. Seas. the. of. Tray.. Seas.. flgS･. T･. 5･ pp･. U･S･S･R･,. expedition 112･. 205-216,figs･ 1-301,丘gs.. pp･. works.. (InRussian). 1-201.. Moscow.. 39,. i-Ⅹvi,ト. (In Russian). STEBBING,. TH･R･R･. 1913･. Cumacea. Das. (Sympoda)･. Tierreich･. Lief･. pp.. 137.Berlin. THOMSON,. G･M1. Journ. -ZIMMER,. C1. Die. Bd.. 18,. 1921･. On. the. 6651694,. Berlin,. of. (Zoology).. Cumaceen s.. Mitteilung也ber. Mus.. occurrence. SocリLondon. 1903,. Syst”. Zool.. 1892･ Linn.. vol. ftir. d9SMuseums Abb.. A-Z,. Cumaceen Bd.. two. 10,. s.. 117-149,. species. of. 24, pp.. Cumacea. 263-271,. Naturkunde. in. in pis.. New. Zealand.. 16-18.. Berlin.. Zool.. Jahrbリ. AAIEE. des. Berliner Abb.. 1-55.. zoologischen. Museums.. Mitt..

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