Sc i . R e p . Kanazaw
品U n i v . Vo l . 1 8 , N o . 2 , p p . 9 7
~1 5 : 3 December 1 9 7 3
On t h e Diatoms from Lake Kahoku‑gata
日
i r o n o r iKAMIJO* Toshiharu
ネ
ι a{ 0 1 Kanaz a1 u a
Hs I n f 1 0ws
ピ md
ゲLi b e r a l l u r n a z a w a
( R e c e i v e d O c t o b e r 2 4 , 1 9 7 3 )
Abstrad 1 7 3 s p e c i e s and v a r i e t i e s 0 1 diatoms , p l a n k t o n i c , b e n t h i c and a t t a c h
巴d , a
i"巴i d e n t i f i e d , and 1 5 3 o f which a r e d e s c r i b e d and i l l u s t r a t e d . fromKahoku~gata , a b r a c k i s h lakεin t h e v i c i n i t y o f Kanazawa C i t y , C e n t r a l J ap
乳n
。Lake Kahok l1~gata l i e s a l o n g t h e c o a s t o I t h e Sea o f ]apan and i s s e p a r a t e d from t h ε s e a by a w e l l ‑ d ε v e i o p e d sand d u n e . The l a r g
巴rp a r t o f t h e l a k e w i t h an a r e a o f 2 3 km' was r ε c e n t l y τ εc ! aimεd , l e a v i n g a f l o o d c o n t r o l a r e a o f a b o u t 3 km
2 •But i t i s s t i U t h e l a r g e s t brackish~water l a k e i n t h e Hokuriku D i s t r i c t . The ! a k e b a s i n i s v
己r yf l a t cmd s h a l l o w , b e i n g a b o u t 2 m e t e r s d e ε p n e a r l y a l l o v e r t h e a r
巴日l.The l a k e i s conn
巴c t e c 1v v i t h t h e Sea o f ]apan t h r o u g h thεOhno~gawa , a c a n a l a b o u t 5 km l o n g , which f ! ows o u t from t h
巴s o u t h w e s t
正o r n e ro f t h ε l a k e . As t h e i n f . l ows , t h e r e a r e s i x γ i ‑ v ε r s , t h e T
.lsano‑gav
v‑a ) t h e Morimoto‑gawa , t h ε Tsub
品 目‑gawa , t h
巴Kanal王usare~gawa , t h e N o s e ‑ g
呂wa and t h e
Unoke~gawa. Another c a n a l 1 . 5 km i n I ε n g t h and 1 1 0 m i n w i d t h was b u i J t a c r o s s t h e s a n c 1 dun
日ont h e w ε s t s i d e o f t h e l a k e f o r t h e p u r p o s e o f c o n t r o l i n g t h
日f l o o d . The l o c k ‑ g a t e a t t h e end o f t h i s c a n a l was c l o s
日di n u s u a l c o n d i t i o n
The l i m n o b i o l o g i c a l s t u d i e s o f t h i s l a k e have h i t h e r t o b e e n ma c 1 e by MAS Hl KO ( 1 9 4 ヲ ) , MASHIKO & INOUE ( 1 9 5 2 ) and KANETSUNA ( 1 9 7 3 ) , b u t t h ε i r s t u d i e s were a J . l made 0 1 1 t h e p l a n k t o n b e f o r e t l 1 巴 r e c l
丘mationo f t h i s 1
乱!と日.0
[12 8 A p r i l and 1 2 , 1 9 1 、 1ay , 1 9 7 2 t h ε p r e s
己I1t a u t h o r s ma c 1 e c o l l e c t i o n s o f p l a n k t o n ,ョ t t a c h e d o r g a n i s m s an c 1 τ !
l1.ld i n t h i s l a k e an c 1 a t t a c h e d o r g a n i s m s o f t h e r i v e r s f l o w i n g i n t o t h e l a k e . The p r e s e n t r
白p o r td e a l s w i t h t h e taxonomical s t u d y on t h e diatoms f o u n d i n t h e s ε c o l l e c t i o n s
回Thes t a t i o n s o f t h i s s t u d y a r e shown i n F i g . I . Th
巴c h l o r i n i t yo f s u r f a c
邑watero f t h e l a k
巴i s 30~667 mg/ l . This v a l u e i s a p p a r e n t l y l o w e r a s compared w i t h t h o s e
tε p o r t e d b e f o r e t h e r e c l a m a t i o n
The n u r n b e r o f t h e s p e c i e s o f d i a t o r n o b s e r v e d i s 4 6 i n t h
己p l a n k t o n ,1 1 7 i n t h e a t t
旦chεdo r g a n i s m s o f t h e s h o r e , 6 9 i n samples o f t h
号mud. The number o f t h e s p e c i
色Sc o l l
巴c t e c 1i s 2 2 i n t h e Asano~gawa R i v e r , 3 5 i n t h e Kanaku8are~gawa R i v e r , 3 2 i n t h e Morin
口oto‑gawaR i v e r
二6 5i n t h e Tsubata‑gawa R i v e r , 2 9 i n t h
巴NosεgawaR i v e r and 4 5 i n t h e Unok
邑gawaR i v e r .
The a u t h o r 8 h e r e wish t o e x p r ε s s t h
日rh e a r t y t h a n k s t o P r o f . D r . K
,MASH!KO o f t 1 1 ε N o t o l V ! a r i n ε L a b o r a t o r y , Kanazawa U n i v e r s i t y , f o r h i s k i n c 1 a d v i c e .
9 7
9 8 H i r o n o r i KAMIJO and T o s h i h a r u WATANABE
3km
F i g . 1 . Map o f Lake K a h o k u ‑ g a t a , s h o w i n g t h e l o c a t i o n o f c o l l e c t i n g s a m p l e s .
Coscinodiscaceae
1.
M e l o s i r a v a r i a n s AGARDH (P l . 1
,F i g . 1 )
HUSTEDT , 1 9 3 0 , S u s s w . ‑F , . l 1 0 : p . 8 5 , f . 4 1 ; HUBER‑PESTALOZZI , 1 9 4 2 , B i n n e n g
巴w . , 2 : 2 , p . 3 7 7 , f . 4 4 7 . Valves 19‑23μlong and 17‑20μin diamete
r.Hab. Lake Kahoku‑gata ( s h o r e and p l a n k t o n ) . 2 . M e l o s i r a g r a n u l a t a ( E H R . ) RALFS ( P l . 1
,F i g s . 2 a ‑ b )
HUSTEDT , 1 9 3 0 , S u s s w . ‑ F l . , 1 O : p . 8 7 , f . 4 4 ; HUBER‑PESTALOZZI , 1 9 4 2 , B i n n e n g
巴w . , 2 : 2 , p . 3 8 0 , f . 4 5 1 ‑ 4 5 2
Valves 8‑15μlong , 8‑14μin diamete
r.S t r i a e 1 0 ‑ 1 3 i n 1 0 μ, puncta 7‑9 i n 10μ.
Hab. Lake Kahoku‑gata ( s h o r e , plankton and mud).
3 . M e l o s i r a g r a η u l a t a (
EH R . ) RALFS va
r.a n g u s t i s s i m a MUL L . ( P l . 1
,F i g . 3 )
HUSTEDT , 1 9 3 0 , S u s s w . ‑F , . l 1 0 : p . 8 8 , f . 4 5 ; HUBER‑PESTALOZZI , 1 9 4 2 , B i n n e n g e w . , 2 : 2 , p . 3 8 1 , f . 4 5 2 ‑ 4 5 3
Valves 15‑18μlong , 5‑6μin diamete
r.S t r i a e 1 1 i n 10μ, puncta 9‑15 i n 10μ.
Hab. Lake Kahoku‑gata ( s h o r e , plankton and mud).
4 . M e l o s i r a n y a s s e n s i s MUL L . (P l . 1 , F i g . 5 )
On t h e D i a t o m s f r o m Lake K a h o k u ‑ g a t a a n d I t s I n f l o w s
HUBE l < ‑ P E S T A L O Z Z I , 1 9 , 1 2 , B i n n e n g e w . , 2 : 2 , p . 3 8 5 , f . 4 6 3
Valves 13μ10
江g , 15μin d i a m e t e r . S t r i a e 8 i n 1 0 . u and puncta 9 i n 10μ.
Hab. Lake 1 く ahoku‑gata( s h o r e ) . 5 . M e l o s i m a r g u s MlrLL
刷( P l . 1 , F i g . 6 )
H U B E R ‑ P E S T / ¥ L O Z Z I , 1 9 4 2 , B i n n e n g e w . , 2 : 2 ,
]J.3 8 7 , f . 4 6 7
Valves 1 4 μ 1 2 μ i n diametel 二 S t r i a e9 i n 10μand puncta 5 i n 10μ.
Ha
b.Lake Kahoku‑gata ( s h o r e ) .
6 . M e l o s i r a α r n r > W l .
l(l( G R U N . ) MUL L . ( P l . I , F i g
,4 )
9 9
HUSTEDT , 1 9 3 0 , S u s s w . ‑F , . 1 H l : p . 8 9 , f . 4 9 ; Hw ヨ ER‑PESTALOZ Z l , 1 9 4 2 . B i n n
日ng
引V . , 2 : 2 , p . 3 8 8 , f . 4 6 8
Valves 3 μ 5 μ i n diametel 二 S t r i a e1 6 ‑ 2 1 i n 1 0 / 1 , puncta 2 1 i n 10μa Hab. Lake Kahoku
←gata (shorεand mud).
7 . M e l o s i m i ω l i c a (EHR
,)Kun 1 , 7 )
HUSTEDT , 1 9 3 0 , S i . i s s w . ‑ F ! . , 1 0 : p . 9 1 , f . 5 0 ; HUBER‑PESTALOZ Z l , 1 9 4 2 , B i n n
巴n g e w . , 2 : 2 , p . 3 8 9 , f 4 7 0 .
Valves 6‑7μlong
,9‑10μin diamete
r.S t r i a e 1 5 i n 1 0 μ
,puncta 1 9 i n 10μ
Hab
四LakeKahoku‑gata (plankton and mud) , Tsubata‑gawa R i v . , Unoke‑gawa R i v . 8 . M e l o s i r a i t a l i c a (EH R . ) KUTZ
,va
r.t e n u i s s i m a ( G R U N . ) Muu.. ( P l . 1 , F i g . 8 )
HUSTEDT , 1 9 3 0 , S u s s w . ‑ F 1 . , 1 0 : p . 9 1 ; HUBER‑PESTALOZZ! , 1 9 4 2 , B i n n e n g
日W., 2 : 2 , p . 3 9 0 , f . 4 7 1 . Valves 7‑11μlong
,4‑5μin c l i a m e t e
r.S t r i a e 1 6 i n 1 0 / 1
,puncta 1 7 ‑ 2 0 i n 1 0 μ
,Hab. Lake Kahoku‑gata ( s h o r e , and mud) , Asano‑gawa Riv 9
,CLEVE e t G r r u N . ( P l . 1
,F i g . 9 )
HUSTEDT , 1 9 3 0 , S i . i s s , ^ ヘ F ! . , H J : p . 1 0 0 , f . 6 5
巳Valves 6‑8μ1
日c1iameter and s t r i a e 1 1 i n 10μa
Hab. Lake Kahoku‑gata ( s h o r e ) , Morimoto‑g
創 刊R i v . , Tsubata‑gawa R i v . 1 0
, 幻a KUTZ
,1
,F i g .
HUSTEDT , 1 9 3 0 , SÜ~おw. ‑F , . l 1 0 : p . 1 0 0 , f . 6 7
Valves 16‑20μin diameter a n c l s t r i a e 7 i n 1 0 μ Ha
b.Lake Kahoku‑gata piankton and mud).
1
1.s t r i a t a (Ku T Z . ) GRUN
,( P l . 1 , F i g . 1 1 ) HUSTEDT , 1 9 3 0 , S u s s w . ‑F , . l 1 0 : p . 1 0 1 , f . 7 1
Valves 14‑15μin diameter and s t r i a e 1 0 ‑ 1 1 i n 10μE Hab. Lake Kahoku‑gata ( s h o r e and mud)
1 2
図C y c l o t e t l a η z e r a t a BACHMANN ( P I . 1 , Fig
,1 2 ) HUSTEDT , 1 9 3 0 , S u s s w . ‑F , . l 1 0 ; p . 1 0 5 , f . 8 1
Valves 6‑6.5μin diameter and s t r i a e 1 1 i n 10μ.
Hab. Lake Kahoku‑gata ( s h o r e , plankton and mud) , Morimoto‑gawa Ri も¥
1 3 . C o s c i η o d i s C l
必l a c u s t r i s GRUN
,1 , F i g . 1 3 ) HUSTEDT , 1 9 3 0 , S U s s w . ‑F , . l 1 0 : p . 1 1 3 , I . 9 0 .
VaIves 28μin diameter , s t r i a e 1 2 i n 10μand puncta 1 2 i n 10μ.
1 0 0 H i r o n o r i K A M I J O a n d T o s h i h a r u WATANABE Hab. Lake Kahoku‑gata ( s h o r e , p l a n k t o n a r i d m u d ) .
F r a g i l a r i a c e a e
1 4 .
Diatoma h i e m a l e ( L Y N G B Y E ) H E I B . v a r . mesodon ( E H R . ) GRUN. ( P
l.1 , F i g . 1 4 ) P A T R I C I く& R E I M E R , 1 9 6 6 , D i a t . U . S . , 1 : p . 1 0 8 , p 1 . 2 , f . 8 .
V a l v e s 12‑13μlong
,6μbroad and c o s t a e 4 ‑ 6 i n 1 0 μ . Hab. Lake Kahoku‑gata ( s h o r e ) .
1 5 .
Diatoma v u l g a r e BORY v a r . grande (W. S M I T H ) GRUN. ( P
l.1
,F i g . 1 5 ) P A T R I C K & R E I M E R , 1 9 6 6 , D i a t . U . S . , 1 : p . 1 1 0 , p . 1 2 , f . 1 3 ‑ 1 4 .
V a l v e s 28‑29μlong , 4μbroad and c o s t a e 7 i n 1 0 μ . Hab. Lake Kahoku‑gata ( s h o r e and p l a n k t o h ) .
1 6 . M e r i d i o n c i r c u l a r e AGARDH va
r.c o n s t r i c t u m ( R A L F S ) V . HEURCK ( P
l.1
,F i g . 1 6 ) P A T R I C K & R E I M E R , 1 9 6 6 , D i a t . U . S . , 1 : p . 1 1 4 , p l . 2 , f . 1 6 .
V a l v e s 26μlong , 6μbroad. S t r i a e 1 6 i n 1 0 μand c o s t a e 3 i n 1 0 μ . Hab. Morimoto‑gawa R i v .
1 7 . 0 ρ
ゅh o r am a r t y i H E R I B . va
r.m a r t y i P A T R . & R E I M . ( P
l.1 , F i g . 1 7 ) P A T R I C K & R E I M E R , 1 9 6 6 , D i a t . U . S . , 1 : p . 1 1 5 , p . 1 3 , f . 3 .
Valves 10μlong , 4.5μbroad , and s t r i a e 7 i n 1 0 μ . Hab. Lake Kahoku‑gata ( s h o r e and m u d ) .
1 8 . C e r a t o n e i s a r c
附( E H R . )CLEVE v a r . r e c t a ( C L E V E ) KRASSKE (到. 1 1 , F i g . 1 8 ) K O B A Y A S I , 1 9 6 4 , B u l 1 . C h i c h i b u Museum N a t . H i s t . , 1 2 : p . 6 6 , f . 2 a ‑ i .
V a l v e s 29μlong , 7μbroad and s t r i a e 1 4 i n 1 0 μ . Hab. Tsubata‑gawa R i v .
1 9 . F r a g i l a r i a c a p u c i n a D E S M A Z I E R E S va
r.m e s o l e p t a RABH. ( P
l.1 1
,F i g . 1 9 )
P A T R I C K & R E I M E R , 1 9 6 6 , D i a t . U . S . , 1 : p . 1 1 9 , p 1 . 3 , f . 6 ; HUSTEDT , 1 9 3 0 , S u s s w . ‑F , . 1 1 0 : p . 1 3 8 , f . 1 2 8
Valves 38μlong
,3μbroad and s t r i a e 1 8 i n 1 0 μ . Hab. Lake Kahoku‑gata ( p l a n k t o n ) .
2 0 . F r a g i l a r i a v a u c h e r i a e ( K U T Z . ) P E T E R S . va
r.v a u c h e r i , α e P A T R . & R E I M . ( P
l.1 1 , F i g s . 2 0 a ‑ e )
P A T R I C K & R E I M E R , 1 9 6 6 , D i a t . U . S . , 1 : p . 1 2 0 , p 1 . 3 , f . 1 4 ‑ 1 5 ; WATANABE , 1 9 7 1 , A n n . R e p . N o t o M a r . L a b . , 1 1 : p . 1 0 , p 1 . 3 , f . 3 a ‑ c .
Valves 9‑30μlong
,3‑5μbroad and s t r i a e 1 2 ‑ 1 6 i n 1 0 μ .
Hab. Lake Kahoku‑gata ( s h o r e and mud) , Asano‑gawa R i v . , Kanakusare‑gawa R i v . , Tsubata‑gawa R i v .
,Nose‑gawa R i v .
,Unoke‑gawa R i v .
2
1.F r a g i l m 匂 c o n s t r u e n s ( E H R . ) GRUN. v a r . c o n s t r u e n s P A T R . & R E I M . ( P
l.1 1 , F i g . 2 1 ) P A T R I C K & R E I M E R , 1 9 6 6 , D i a t . U . S . , 1 : p . 1 2 5 , p 1 . 4 , f . 4
Valves 11μlong
,7μbroad and s t r i a e 1 8 i n 1 0 μ .
Hab. Lake Kahoku‑gata ( m u d ) .
。
口
t h eD i a t o m s f r o m L a k e K a h o k u ‑ g a t a a n d I t s I n f l o w s
2 2 c o n s t
γu e n s GRUN. va
r.wnter ( E H R . ) GRUN.
P A T R I C K & R E I M E R , 1 9 6 6 , D i a t . U . S . , 1 : p . 1 2 6 , p L 4 , t 8 ‑ 9 Va ドぽ s10μ3.5μbroad and s t r i a e 1 3 i n 10μ.
Hab. Lake
II
, F i g .
2 3 . c o n s t r u e η S ( E H R . ) GRUN. v a τ
釘1 S M ! T H ) SCH l I L Z ( P
. ln , F i g . H l I S T E D T , 1 9 : : : 0 , S U S S W . ‑F L . , 1 0 : p . 1 4 1 , f . 1 4 0
Valves 1 5 μ
p ! a n k t o n and
2 4 . P I I T R & R E l M
,( P
l.P P , T R I C K & R E I M E R , 1 9 6 6 , D i 丘 t .U
白S . , 1 ; p . 1 2 7 , p l . 4 , f . 1 0 .
Valves 5μ4μbroad and s t r i a e 6 i n 10μ.
1 0 1
Hab. Lake ( p l a n k t o n and Tsubata‑gawa
R
i.v
2
:3. A.s t e r i o n e l l a HASSALL va
仁P A T R I C K & R E I M E R , 1 9 6 6 , D i a t . U, S . , 1 : p . 1 6 0 , p 1 . 9 , f . , [ Valves 58μlong 3 . nd 3μbroad.
Hab. Lake
GR l I N . ( P
. IlI, F i g
,2 6 . 命 s c i c u l a t a(AGARDB) I { U T Z . v a r . t r u n c a t a P A T R . F i g s . 2 6 a ‑ b ) P A T R I C K & R E I M E R , 1 9 6 6 , D i a t . U. 5 . , 1 : p . 1 4 2 , p l . 5 , f . 1 6 .
V a l v e s 1 6 ‑ 3 0 μ
ラ4 ‑ 5 μ a n ds t r i a e 1 4 ‑ 1
3:i n 1 0 , U .
Hab. Lake ( s h o r e and mud) , R i v . 2 7 .
品。ne d r arumtens KUTZ
肉V aI¥五 n n i l i a r i s H U S T . ( P
. 1F i g . 2 7 )
P A T R I C K & R E I M E R , 1 9 6 , . 6 D i a t . U . S . , 1 : p . 1 4 ; ) , p 1 . 5 , f . 2 0 Valves 30‑32μions33.5μbroad and s t r i a e 1 6 i n 1 0 μ . Hab. LaIzεKahoku‑gata
2 8 . r u r n t c n s KUTZ. va
r.GRUN. 2 8 a ‑ b ) P A T R I C K & R E I M E R , 1 9 6 6 , D i a t . U . S . , 1 ; p . 1 4 4 , p l . 6 , f . 1 .
Valves 3 2 ‑ 4 , 9μlon ふ 4‑5μbroad and s t r i a e 1 1 ‑ 1 2 i n 10μ.
Hab. Lake Riv
晒2 9 . ρu l c h e l l a RALFS ex K i i T Z . v a r . βu l c h e l l a P A T R . &
R.E l l V l .
P A T R I C K & R E H v fE R , 1 9 6 6 , D i a t . U . S . , ; . 1 p . 1 4 6 , p l . 6 , f . 1 0 , 1 2 . VaJves 83‑109μ6..7μbroad am: s t r i a ε 1 4 i n 1 0 μ Hab. Lake
3 0 0 u l n α E H R . va
r.u l n a PAT R .
&R E I M . 3 0 ) P A T R I C K & R E I M E R , 1 9 6 6 , D i a t . U . 5 . , : p . 1 4 8 , p l . 7 , f . 1 ‑ 2
Valves 170‑200μlong , 7μbroad and s t l
・i a e9 ‑ 1 0 i n 1 0 μ Hab. Lake
R i v .
2 9
1 0 2 H i r o n o r i KAM i J O a n d T o s h i h a r u VVATANABE
E u n o t i a c e a e
3
1.E u n o t i a η S O E S T R . vaL
びη SPATR
, &R E l M . F i g
,3 1 } P A T R I C K & R E I M E R , 1 9 6 6
ヲD i a t . U . S . , 1 : p . 2 1 1 , p l . 1 3 , f . 9
Valves 31μ4μbroad and s t r i a e 2 0 i n 1 0 μ . Hab. Tsubata‑ R : awa R i v .
Achnanthaceae
3 2 . C o c c o
幻e z s E H R . v a r . e u g か (EHR , ) CLEVE ( P L 3 2 P A T R I C K & R E I M E R , 1 9 6 6 , D i a t . U . S . , 1 : p . 2 4 1 , p l . 1 5 , f . 8
Valves 18‑22μ!ong , 10μbroad. S t r i a e 2 1 i n 10μ011 t h e raphe valvεand 1 8 ‑ 2 1 i n 1 0 μ 0 1 1 t h e v a l v e .
Hab
,Lake Morimoto‑gawa R i v .
3 3 . Achnanthes l i n e a r i s (W. GRUN. v a r
ごl i η e a r i sP A T R . & R E I M . F i g
圃3 3 ) P A T R I C K & R E I M E R
ヲ1 9 6 6 , D i a t . U . S . , 1 : p . 2 5 1 , p . l 1 6 , f . 3 ‑ 4
Valves 15μ3μbroad and s t r i a ε 2 5 i n 10μ011 theγalve.
Ha
b.Lake R i γ .
3 4 . Achnanthes GRUN. v a r . P A T R . & R E I M . F i g
,3 4 ) P A T R I C K & R E I M E R , 1 9 6 6 , D i a t . U . S . , 1 : p . 2 5 4 , p l . 1 6 , 1 . 1 1 ‑ 1 2
Valves 14μlong , 4μbroad and s t r i a e 2 2 i n 10μon
:ih e v a l v e
,The p r e s e n t specimen c o i n c i d e s w i t h t h e d e s c r i p t i o n P A T R I C K
& REIMER (1 9 6 6 )
,t h a t t h e number o f t h e s t r i a e i s l e s s t h a n t h a t i n t h e i r
仁川( s t r i a e 2 7 ‑ 3 0 i n 1 0 μin P A T R I C K &
A U,
.""L")。Hab. Tsubata‑ I ! awa R i v .
3 5 . Achna η t h e s l e ω z s z a n a P A T R . va
r.l e ω z s z a n a P A T R . & REIM
, III, F i g o P A T R l C K & R E I M E R
ヲ1 9 6 6 , D i a t . U . S . , 1 : p . 2 6 6 , p . 1 1 7 , f . 1 9 ‑ 2 0 .
Valves 1 1 μ 4
.5μbroad and s t r i a e 1 5 i n 10μon t h e v a l v e . Ha
b.Tsubata‑gawa R i v .
3 6 . Achn α n t h e s c l e v e i G
艮U N .va
r.c l e v e i P A T R . & REIM , ( p l . 3 5 ) P A T R I C K & R E I M E R
号1 9 6 6 , D i a t . U . S . , 1 : p . 2 6 7 , p l . 1 7 , f . 2 1 ‑ 2 2 .
Valves 15μ5μbroad and s t r i a e 1 8 i n 10μon t h e raphe v a l v e . Hab. Lake ( s h o r e ) , R i v .
3 7 . Achnanthes h a u c k i a n a GRUN. v a r . r o s t r a 加 SCHULZ F i g . P A T R I C K & R E I M E R , 1 9 6 6 , D i a t . U . S . , 1 : p . 2 6 9 , p . 1 1 7 , f . 3 3 ‑ 3 4
Valves 21μlong , 8 μ a n d s t r i a e 1 1 i n 10μon t h e Hab. Lake and
3 8 . Achnanthes l a n c e o l a t a (BR 長払) GRUN. va
r.l a n c e o l a t a PATR
, &R E I M . v a l v e .
τl h
YEH4
ys
i
3 8
P A T R I C K & R E I M E R , 1 9 6 6 , D i a t . U . S . , 1 : p . 2 6 9 , p 1 . 1 8 , f . 1 ‑ 1 0
。
11t h e D i a t o m s f r o m Lake K a h o k u ‑ g a t a a n d l t s l n f l o w s 1 0 3
Valves 1625μlong , 5‑7μbroacl a n c l s t r i a e 1 1 ‑ 1 3 i n 10μon both v a l v e s .
Hab. Lake Kahoku‑gata ( p l a n k t o n and mud) , Asano‑gawa R i v . , Kanakusare‑gawa R i v . ,
lVIorimoto‑gawa R i v . , Tsubata‑gawa R i v . , Nose‑gawa R i v . , Unoke‑gawa R i v . 3 9 . A c h n a n t l z e s l a n c e o l a t a ( B R E B . ) GRUN. va r . d u b i a GRUN. ( P
. lI I I , F i g s . 3 9 a ‑ b )
PATRICK & REIMER , 1 9 6 6 . D i a t . U . S . , 1 : p . 2 7 1 , p l . 1 8 , f . 1 1 ‑ 1 5 .
Valves 20μlong , 7μbroad and s t r i ae 1 3 i n 10μon both v a l v e s . Hab. Kanakusare‑gawa Riv , ・
lVIorimoto‑gawa R i v . , Tsubata‑gawa R i v . 4 0
園A c h n a n t h e s t e r f l
ρe r e i
lVI.P E R A G . va r.うの匂 i PATR.
&R E l M . ( P L I I I , F i g . 4 0 )
PAHUCK & REIMER , 1 9 6 6 , D i a t . U. S . , 1 : p . 2 7 8 , p l . 1 9 , f . 1 2 ‑ 1 3 .
Valves 46μlong and 11μbroad. S t r i a e 1 0 i n 10μon t h e raphe v a l v e and puncta 9 ‑ 1 1 i n 1 0 μon t h e raphe v a l v e .
日a b .Lake Kahoku‑gata ( p l a n k t o n ) .
4
1.A c h n a n t h e s b r e v i P e s AGRA Dl va I ‑ r . i n t e n n e d i a ( K U T Z . ) CLEVE ( P
l.I I I , HUSTEDT , 1 9 3 0 , S u s s w . ‑ F l . , 1 0 : p . 2 1 0 . f . 3 1 0
Valves 20μlong , 11μbroad and s t r i a e 9 i n 10μon t h e raphe v a l v e . Ha
b.Lake Kahoku‑gata ( s h o r e and p l a n k t o n ) .
4 2 . A c h n a n t h e s c r e n u l a t a GRUN. ( P
. lI I I , F i g s . 4 2 a ‑ b )
WATANABE , 1 9 7 1 , A n n . R e p . Noto Ma r . L a b . , 1 1 : p . 1 2 , p l . 4 , f . 1 7 a ‑ c .
Valves 40μlong and 13μbroad. S t r i a e 8 i n 10μon t h e pseudoraphe v a l v e and 8 ‑ 9 i n 10μ011 t h e raphe v a l v e .
Hab.
lVIorimoto‑gawa R i v .
N a v i c u l a c e a e
4 3 . M a s t o g l o i a s m i t h i i THWAITES ex
W.SMITH va r . l a c u s t r i s GRUN. ( P
l.I I I , F i g s . 4 3 a ‑ d ) PATRICK & REIMER , 1 9 6 6 , D i a t . U. S . , 1 : p . 3 0 0 , p l . 2 0 , f . 1 2 ‑ 1 3
Valves 21‑32μlong and 10‑11μbroad. S t r i a e 1 7 i n 1 0 μ, puncta 2 1 i n 10μand l o c u l i 6 ‑ 7 i n 10μ.
Hab. Lake Kahoku‑gata ( s h o r e ) .
4 4 . F r u s t u l i a De
T.va r . v u l g , ビ l r i s P A T R .
&R E I M . ( P
. IIV , F i g . 4 4 ) PATRICK & REIMER , 1 9 6 6 , D i a t . U. S . 1 : p . 3 0 9 , p 1 . 2 2 , f . 3
Valves 41‑58μlong , 10‑11μbroad.
Ha
b.Lake Kahoku‑gata ( s h o r e and p l a n k t o n ) , Kanakusare‑gawa R i v . , Morimoto‑gawa R i v .
,Unoke‑gawa R i v .
4 5 . G y r o s i g m a s 戸 e n c e r i i (QUE K . ) G R I F F .
&HENFR. va r . s p e n c e r i i PATR.
&R E I M . ( P L IV , Fig
四4 5 )
P A T R I C K & REIMER , 1 9 6 6 , D i a t . U . S . , 1 : p . 3 . 1 5 . p . 1 2 3 , f . 4
Valves 100μlong and 12μbroad. L o n g i t u d i n a l s t r i a e 2 1 i n 10μancl t r a n s v e r s e s t r i a e 2 0 i n 1 0 μ .
Ha
b.Lake Kahoku‑gata ( s h o r e and mud)
,Tsubata‑gawa R i v .
1 0 4 H i r o n o r i KAMIJO a n d T o s h i a r u WATANABE
4 6 . Gyros
忽manodiferum ( G R U N . ) R E I M . va
r. nod~たrurY!PATR.
&R E I M . ( P
. lIV
,F i g . 4 6 ) PATRltK & REIMER , 1 9 6 6 , D i a t . U . 5 . , 1 : p . 3 2 0 , p l . 2 4 , f . 2 .
Valves 74‑79μlong
,12μbroad. L o n g i t u d i n a l s t r i a e 2 1 i n 10μand t r a n s v e r s e s t r i a e 2 0 ‑ 2 1 i n 10μ.
Hab. Lake Kahoku‑gata ( s h o r e and mud).
47.
Gyrosigma ωo r m l e y i ( S U L L I V . ) BOYER v a r . wormleyi PATR.
&R E I M . ( P
. lIV
,F i g . 4 7 ) PATRICK & REIMER , 1 9 6 6 , D i a t . U . 5 . , 1 : p . 3 2 7 , p l . 2 6 , f . 3 .
Valves 80‑101μlong
,14‑19μbroad. L o n g i t u d i n a l s t r i a e 2 5 ‑ 2 6 i n 10μand t r a n s v e r s e s t r i a e 2 0 i n 10μ.
Hab. Lake Kahoku‑gata ( s h o r e , plankton and mud).
4 8 . Neidium i r i d i s ( E H R . ) CLEVE v a r . am ρ higom ρ hus ( E H R . ) V. HEURCK (到.IV
,F i g . 4 8 ) HUSTEDT , 1 9 3 0 , 5 u s s w . ‑F , . l 1 0 : p . 2 4 5 , f . 3 8 2 .
Valves 45μlong
,16μbroad
,s t r i a e 1 9 i n 10μand puncta 1 6 i n 10μ.
Hab. Kanakusare‑gawa R i v . , Tsubata‑gawa R i v .
49.