100 The Botanical Gazette. (March, : 
therefore the present form clearly belongs to Cryptoglena, 3 — 
defined by Ehrenberg, but no species of Ehrenberg agrees — 
with it in measurement nor does it resemble any of Ehrenberg’s 
figures. Moreover, none of Ehrenberg’s species were mariné 
Under the name Cryptomonas polymorpha, Perty® has it- — 
cluded all the blue-green forms of Ehrenberg as well as some 
grass-green forms, but his uniting so many various forms 
under one name does not seem to be warranted and has not 
been generally accepted by recent writers. Stein’ gives al — 
green and has two cilia. Cienkowsky,® previous to Steins 
publication, had minutely described a form, calling it Cryp | 
monas ovata, which is evidently much the same form as Steins 
Cryptomonas ovata. More recently Dangeard!® has given¢ 
description of Cryptomonas ovata and his seems also 0 
be the same as that of Cienkowsky and Stein. This form, | 
studied by Dangeard, Stein and Cienkowsky, is very different : 
from that which I have found. Their species has no pigmét = 
spot, no bodies corresponding to the chromatophores 11M] — 
form, it is much larger and the cell shows a degree of ra 
plication far greater than is found in the one here describe’ 
‘Dangeard!! has also described a new blue-green motile 
cell, Cryptomonas cyana, which is very small (3-4/4 long); 
quite recently!” he mentions having observed a marine Crypie 
monas (C. marina), but the description is too short to ene” 
me to judge whether or not it issimilarto the present organ.Sm 
A species that closely resembles my form in m 
has been described by Hansgirg!* as Chroomonas 
but this species differs in having no pigment spots 400 
shape of the chromatophore which is lamina-like with py" 
noids 3 wide. 
4 ‘ 
ALi 
*Perty, Zur Kennt. kleinster Lebensf. nach Bau. Funk. System 
7Stein, Der Organismus der Infusionthiere. mI Abtheilung, 1 Haltl® 
fig. 26, 1878. 
yaar aks Bot. Centralblatt. 24: 342. 1885. 
Cienkowsky, Ueber Palmellaceen und einige Flagellaten. 
Anat. 6: 424. p/. 27. 1870. 
10Dangeard, Contribution a l'étude des organismes in 
II.—:47. 1890, 
11Dangeard, l.c., p. 54. ; L=- 
i Dangeard, Note sur un Cryptomonas marin. Le Botaniste If- 
Hansgirg, Bot. Centralblatt 23: 230. 1885.—24: 376. 1885- 
pl 1H 
Archiv _ ! 
férieurs. Le BO” u 
ae 
