41 
utum, Bréb. Cooke’s British Desmids, 35. Frond small, 
slender, from six to twenty times as long as broad, narrow lanceolate, 
slightly curved, gradually attenuated, exits acute; empty fron 
colourless, without t strie ; zygospore somewhat quadrate i in front view, 
end view elliptic. Size: mm. x 10 » (R.); 011 mm. x12 4 
Wei 
Prof. Moebius’ note is as follows :—“ Agreeing in form and 
dimensions with those laid down: 11-12 , thick, "135-150 p long.” 
He. 32: Figure from Berkeley’s Cryptogamic Botany, page 120. 
: Burpengary, Thos. LZ. Bancroft. Also found in Europe, North 
Linktica, “Greenland, Nova Zembla, Burma, and New Zealand. 
lineatum, 2;.° Cooke’s British Desmids, 31. Fronds aT at 
road 
e 1Z 
ont 0:43-0°72 mm. x 21-28 p (D.) ; diam., 2. * u (W.). 
rof. Moebius gives the following note :—* 28» broad, 530 » long; 
aaa brownish, , finely striated aeecdeaalig with two transverse 
strive i = the middle. 
va Sehgoraraae Nordst. Lato are Islands and New 
lealnd, differs by the re densely set strix, a more brownish or 
a membrane, gr ine rotuberance in the middle, and larger 
Gmnaions (36-40 » thick) ; it was not observed amongst the Australian 
g® 
5 — of a Reet Thos. L. Bancroft. Also found in Europe, North America, 
4 . Dian #, Lhr. Cooke’s British Desmids, 26. Fronds slender, six 
eh ti times as long as broad, crescent-shaped, much curved, rapidly 
‘nuated, upper margin very convex, lower very concave without a 
Central inflation ; ends. sub-acute, with a el! slight emargination at 
gle series ; 
‘mpty frond somewhat straw- coloured, or faintly reddish, without 
ne Suture evident ; nygospore globose smooth. Size: O17 
(R.); 011-03 mm. x 10-25 p (D.); diam, 16-20 » (W.) 5 
“Tigospore, 86 p (L.). 
be: rof, Moebius’ note is as fellows: —“ Cells 15-24 thick, 200-300 » 
Sa ate membrane faintly brownish, very finely striated. ‘A. widely- 
‘i Mbuted s species: Europe, North and South America, Asia, "Sie 
ats Islands, New Zealand. Of a species resembling C. Diane I saw 
ren siden in a The zygospore 7 quadrangular, with 
a n 
B. The co conjugating cols were 9» broadi in the middle and 86 
3 Its membrane resembled that of C. Diane 
nha 33: a, living ; b, empty cell.—Cooke, Le c, 
ral _ ine emeey, Thos. L. Bancroft. Also found in Europe, North America, 
