202 
Var. capillaris, Kiz. Lake, May, 1902; moat, July, 1902. 
This seems to be merely a stage in the development of the 
adult form. 
Prasiola, Ag., 1821. 
P. crispa, Kiitz. Tab. Phyc., v., t. 40, f.6. “On damp ground, 
common” (Massee ) ; Kew me near church, September, 1902 
(Darbishire !). 
Series 3. Protococcoideae. 
1. VOLVOCACEAE. 
a. Chlamydomonadeae. 
Chlamydomonas, Ehrb., 1832. 
. pulvisculus, Hhrb. Infus., 64. Plankton of lake and pond, 
April, 1902 dn D plankton of laboratory tank, April-Sep- 
tember, 1902 (mihi !). 
C. Braunii, Gorosch. in Bull. Soc. Imp. d. Nat. d. Moscou, 1890, 
No. 3, 498, &c. pay of pond, April, 1902 (Chodat !) ; plankton 
of lake, May, 1902 (mihi!). This species has not previously Pooh 
found in this country. 
Chlamydococcus, Br., 1849. 
C. pluvialis, Br. Rejuv., 206. Laboratory tank, May, 1902. 
Chlorogonium, EArb. 
C. euchlorum, Hhrb. Plankton of pond, April, 1902 (Chodat !) ; 
Victoria Regia tank, May, 1902 (mihi !). 
b. Phacoteae. 
Coccomonas, Stein, 1878. 
C. orbicularis, Stein. Pond, September, 1902. 
c. Volvoceae. 
Volvox, Linn., 1758. 
V. globator, Linn. Syst., Ed. x. Very common in plankton of 
d pond, April-August, 1902 | rare in plankton of lake, 
Eudorina, EArb., 1832. 
E. elegans, Ehrb. Monats. Berl. 1831, 78. In the plankton of 
her 
rn artificial waters, rather co ommon ; plankton of moat, May, 
