ALGOLOGICAL NOTES 83 
Scenedesmus, but his reasons for this are not at all clear, and I 
Sm 
ave recently contested this view* and stated “ that ith’s 
careful cultural work indicates that Tetvadesmus —- a 
morphological character of such importance as to ant its 
generic rank.” That others have arrived wi a ec eonalnaon 
is evidenced by the fact that bgt ar 8s kak ane ee 
genus from the Victoria Nyanza under the of “ Victoriella 
? 
n. gen.” which is identical with Smith’s ae Piedlens mUUS. 
have also another species of the genus from the English Lake 
District, which I propose to describe as a new one, viz 
Tetradesmus cumbricus, sp. nov. Coenobia e cellulis 
quaternis ut in 7. wisconsinensi dispositis; cellulis late ellip- 
ticis diametro circiter duplo gioribus, 
22-32 pw. (Fig 7.) 
Hab. In “hie Sgr of Ennerdale Water, 
Cumberland. (Aug. 1908.) 
Not more than Shalt. -a- Lee specimens of this 
Alga were observed. When found in 1908 I made 
careful drawings, which ste here reproduced. 
These were put aside at the time with a provi- c 
sional note “‘ New genus; material insufficient.” 
Since Smith has been able to establish the genus 
on ample material, I have not the pomages hesita- 
tion in describing the English Alga a new 
Species. It is distinguished from 7. wisconsinensis 
by its larger size, the different shape of its cells, Ba ne 
which are stouter and without the attenuated aaa i rae so 
sail cle and also BY its much stronger cell- 4 gnaB, eenobia 
wall. The wall of TZ. cumbricus is quite unlike from the side; 
that of a Sosnane sett oad is as thick ie that . Fale bbe e 
of ee aa 3 ot the end. 
& Tes apEsmus G. M. Smith, ie 
(= Vicioriella Nevaks 1914) belongs to 
sub-family Selenastree of the Autosporacee, and i is not very far 
removed from Ankistrodesmus, especia y such a species as 
A. quaternatus W. & G. S. West.j It contains three species 
which m age Ls aeticataes as follows :— 
T. BPigersicey G. M. Smith. Cells elliptic- es 
with attannated “h d rather blunt extremities which are out- 
Asbaske divergent ; pyre excentric. Length of cells 12-14 5 p, 
readth 4-5:8 
ab. Mogehng in sluggish streams and lakes at Madison, 
Wisconsin, U.S.A. Also in Norway (1914). 
nf B et. 1914, p. 278. 
t y. Wolosayaska, 8 ving ee Gia eidielankies des Viktoriasees,” 
Hedwigia, ly. Bi 
{ W. & G. S. West ‘Freshwater Alge from Burma, &c.,”’ Ann. Roy. 
n. Gard, Date vi part ii. 1907. 
