98 MR. G. 5. WEST ON THE FRESHWATER ALGE 
The Peridinieæ have been examined, and the new forms described, by 
Mr. E. Lemmermann of Bremen, to whom I offer my best thanks for his 
kindly assistance on this as on other occasions, with this group of flagellate 
organisms. 
Class CHLOROPHYCE. 
Order (GEDOGONIALES. 
Family (EDOGONIACE. 
Genus CGEDOGONIUM, Zink. 
1. (ŒDOGONIUM CRYPTOPORUM, И. Dispos. Œdog. Suec. (1810) р. 19; 
Prodr. Monog. GEdog. (1814) p. 7. 
Nyasa.—In swamp, Karonga (2 July, 1904 ; no. 34). 
9. (Rpoaoxivw Нівхи, Gutw. in Rospraw. matem.-przy. Akad. Ито). 
Krakow. xxxii. C) p. 2, t. 5. fig. 15 Hirn, in Act. Soc. Sci. Fennice, xxvii. 
(1900) p. 93, t. 5. fig. 29. 
Crass. cell. veget. ...... 11-13 ш; altit. 4—5-plo major ; 
, 00g0N............. 34-37 ws 87-40 ш; 
„ оозрог. ......... 30-31 p; „ 30-31 p; 
„ cell. antherid... Пи; „ T- $5 p. 
Tanganyika.—In swamp, Kituta (26 Aug. 1904 ; no. 80). 
This species has previously been observ ed only in Galicia and Ireland. 
Var. AFRICANUM, var. n. 
Var. cellulis vegetativis leviter crassioribus et brevioribus, levissime capi- 
tellatis ; oogoniis paullo majoribus ; antheridiis 3-cellularibus. 
Crass. cell. veget. ...... 13-15 р; altit. 23-3-plo major ; 
„ 00gon. ....... .. 89-40 u;  , 38 р; 
„ оозрог. ........ 33-34 Ji ; „ 33-34 ш; 
„ cell. antherid.... 13-1355 „ 5- бр. 
Nyasa.—In swamp, Karonga (э July, 1901 no. 34). 
3. (Edogonrum picryosporum, Wittr. Prodr. Monogr. Œdog. (1814) p.13; 
Hirn, l. с. p. 108, t. 7. fig. 43. 
Forma oogoniis et oosporis ovato-ellipsoideis, paullo majoribus. 
‘rass. cell. veget. ...... 14-16 д; altit. 3-5-plo major ; 
„ O0gon. ......... 42и; , 52 р; 
„ оозрог. ......... 40 и; › 50 р; 
„ cell. antherid.... pes y 8-9 р. 
Tanganyika.—In swamp, Kituta (26 Aug. 1904; по. 80). 
