944 THE JOURNAL OF BOTANY 
Alg. et Fung. 1867, i. p. 41, t. 16. Allogoniwm smaragdinum 
(Reinsch) Hansg.] : A 
Var. palustris Hansg. Prodr. Algenfl. Bohm. 1888, ii. p. 182 
(sub Allogoniwm). Forma cellulis quadratis, oblongis, vel oblongo- 
Epiphytic on Polysiphonia utricularis, floating in shallow 
water (no. 451). : ; 
This variety was described from Bohemia (“ in stagnis”). 
66. Chroococeus turgidus (Kiitz.) Nig. In algal scum on sur- 
face of stagnant pool (no. 471). 
PHYTOPLANKTON FROM THE ALBERT NYANZA. 
By G. 8. West, M.A., D.Sc., F.L.S. 
In July, 1907, Mr. R. T. Leiper, M.B., Helminthologist to the 
London School of Tropical Medicine, who accompanied the recent 
expedition despatched to Uganda by the Egyptian Survey Depart- 
ment, collected in the Albert Nyanza a sample of plankton and 
were forwarded to me for examination by Dr. Cunnington, and 
the results afford an interesting comparison with the known 
lak 
Altogether forty-eight species were observed in the plankton 
: : : t 
near the bottom. elosira granulata, Synedra Cunningtoniz 
Glenodinium pulvisculus, and certain species of Tetraédron and 
Scenedesmus were fair 
form of Volvox awreus were of particular interest. A species of 
Microcystis and a large Diatom of the genus Vanheurckia have 
been described as ne 
The following is a complete list of the species observed :— 
HLOROPHYCES.—Mougeotia sp. (sterile; with large cells 30- 
cladum Nordst. forma africana G. 9. West, St. gracillimu Wz & 
G. 8. West var. biradiatum W. & G. 8. West, St. limneticum 
