FRESHWATER ALGM 297 



Genus APHANOCAPSA Nag. 



77 Aphanocapsa montana Cramer 



Rabenh. Flor. Europ, Alg. II, 1865, p. 50 ; Forti, Syll. Myxophy. 1907, p. 72. 



Diam. cell. 2-2.4 M. 



Hob. On stones, High Moraines, Mt. Erebus. 



The cells were fairly crowded, and formed yellow- green, gelatinous colonies from 

 800 to 1300 /x in extent, closely adherent to the stones, and amongst the thalli of 

 Prasiola antarcticu Kiitz. 



Genus CHROOCOCCUS Nag. 



78 Chroococcus minutus (Kiitz.) Nag. 



Gatt. einzett. Alg. 1849, p. 46; Forti, Syll. Myxophy. 1907, p. 14. 

 Diam. cell. 8-11 M; colon, usque ad 60 M diam. 

 Hab. Green Lake. Pond on Mt. Erebus. 



Var. obliteratus (Richter) Hansg. Prodr. Algenfl. Bohm. II. p. 162. Chr. obliteratm 

 Richter in Hauck & Richter, Phyk. Univ. No. 41 ; Notarisia, 1886, p. 97. 

 Diam. cell. 6-8 M; diam. colon. 23-29 M. 

 Hab. Coast Lake. 



79 Chroococcus minor (Kiitz.) Nag. 



Gatt. einzell. Alg. 1849, p. 47, t. 1A ; Rabenh. Flor. Europ. Alg. II, 1865, p. 30 



Diam. cell. 4 M ; diam. colon. 18-20 M . 



Hab. In pond, Cape Royds. 



Forma minitna West in Journ. Linn. Soc. bot. 1894, p. 275, t. 16, f. 18. Chr. 

 minutus var. minimus v. Keissler in Verhandl. der zool.-bot. Ges. Wein, 1901, p. 394, 

 f. 1, 2. Chr. minimus (v. Keissler) Lemm. in Archiv. fur Botan. utgifv. af K. Sv. Vet.- 

 Akad. Bd. 2, No. 2, 1904, p. 102. 



Diam. cell. 1.9-2.2 M ; diam. colon. 22-31 /u. 



Hab. Green Lake. Lake on west side of McMurdo Sound. 



80 Chroococcus pallidus Nag. 



Gatt. einzell '. Alg. 1849, p. 46, t. 1, f. A2 ; Rabenh. Flor. Europ. Alg. II, 1865, p. 33. 

 Diam. cell. 6-7 M; diam. colon. 16-21 M. 

 Hab. Lake on west side of McMurdo Sound. 



The colonies were rather irregular and consisted of four or eight almost globose 

 cells. The cell- contents were pale yellow- green and granulose. 



81 Chroococcus cohcerens (Breb.) Nag. 



Gatt. einzell. Alg. 1849, p. 46 ; Rabenh. Flor. Europ. Alg. II, 1865, p. 30. 

 Diam. cell. 6-7 M; diam. colon. 16 M. 

 Hub. Green Lake. 



