242 5 NOTES ON JAPANESE DESMIDS. 
X. Sprroreznia Breb. 
1. S. condensata Breb. Junsai numa. 
XI. Onycuonema Wallich. 
1. O. lave Nordst 
. micracanthum Nordst. Junsai 
2. O. filiforme (Ehrb.) ; Sa "Ralf, &e.; O. Nord- 
stedtiana Turner. Junsai numa. This species, so long considered 
Nord. and O. wncinatum Wallich. Jn this respect it agrees with all 
countr 
XII. Spu#rozosma Corda. 
1. S. excavatum Ralfs. Junsai nu 
2. S. granulatum, n.sp. — S. spintlosum Delp., according to 
Wolle, ‘ Desinids of the United States,’ pp. 31 aa 159, PL. iv., 
fig. 14, and no doubt 8. excavatum fering Fievnbictl Nordst. __Small, 
as long as broad, constriction moder ately a open ; sides —- 
wanigad numa. 
Dr. Nordstedt has this species from New Zealand (in lit. eum tc-), 
and the authors have it from several localities in Scotland. 
XIII. Desmmium Ag. 
1. D, Swartzii Ag. Junsai numa. 
2. D. Baileyi (Ralls). Junsai numa. 
3. D. Aptogonum Breb. Junsai numa. 
EXPLANATION oF Piaie 268.—Fig. 1. ne or serakoardagen ast ath ; — 
b, front ; ce, one side; x 400. 2. S. subarmiger baat front 
ae 3. S. ps eudocuspidatum, 8° 6p. a: Sods: Ae ‘haat’, 
quadricornutum, n.sp.; a, sere b, rity 400. 5.8. pees schii Reinseh. 
B. japonicum, n. var.; a, e b, front; x 400. 6. S. oxy at 7 Sp. 5 
; x 600. 7. 5. pubmonticulosum, n. Sp-5 a end; 
b nt ; Caeces um aapitulail 
n.sp.; a, front; b, side 38: C. daliieasnicoe oe a, front; 
b, side; x 600. 11. Nicehidicae prog n.sp.; x 400. . Staurastrum 
connatum Lund. 8. recta ngulum, n. v! x 18. > meme ee apiculata 
pres Meneg.; x 200. 14. Rejrasir ios orbiculare (Ehrb. is. a 
Be 
essum, N. var.; a, end; b, front; x 600. 15. Cosmarium decachondrum, 0. S8p-5 
» front; b, side; c¢, en id; x 600. 16: ¢. “orthopteurum: N. Sp- > - 
17. Spherozosma granulatum, - Bp. ot 2000: 16; ee dium baculoides, D- Sp-3 
x 200. 19. erent (Eh) Hab. ; a, 200 400. 20. Cosmarium 
Foc, 20.5 a, front; b, end 
