NELLIE CARTER: FRESHWATER ALG, 67 
Cosmarium DOCIDIOIDES Lütk. (Penium minutum (Ralfs), Cleve), forma 
mason Lund. Rivière du Carénage. 384 Europe. Var. agAciLE Wille. 
Plaine des Lacs. 338. Europe, Africa, America. 
SYAURASTRUM ORBICULARE Ralfs, var. pepressum Roy & Biss. (Pl. 4. 
fg. 14.) Canala; in ditch. 1359. — Europe, China and Japan, Siam, Aus- 
tralia, New Zealand, Madagascar. The specimens were typical in size and 
form, but the cell-wall often showed a slight thickening, usually at the 
angles and sometimes at the apex of the semi-cell as well. 
S. ALTERNANs Breb. Canala; in ditch. 1359. Europe, India, Siam, 
Australia, New Zealand, Africa, United States. 
S, INFLEXUM Bréb. River Dumbéa. 809. Europe, Japan. 
HYALOTHECA DISSILIENS (Sm.) Bréb. Canala; in ditch, 1359. Europe, 
China, India, Malaya, Australia, Africa, America. 
H. xEGLECTA Racib. Plaine des Lacs. 338. British Isles, Ceylon, 
United States, Guiana. The specimens were very large. Long. cell. 55 4; 
lat. max. 15 p. 
Desmipium Baingyr (Ralfs) De Bary, var. UNDULATUM (Mask.) Nordst. 
Canala ; in ditch, 1359. Java, Australia. 
ŒDOGONIACEZÆ. 
BULBOCHÆTE ELATIOR Pringsh. Plaine des Lacs, 338. Europe, India, 
Australia. Sterile species of Bulbochwte occurred in Nos. 812 and 338. 
(EDOGoNIUM OBLONGUM Wittr. Plaine des Lacs. 338. Europe, India, 
Australia. 
(EpoaoNIUM sp. Plaine des Lacs, 558. This species was fruiting, but 
the oospores were very young. It is moncecious, and is peculiar in that the 
oogonium opens with a pore which is distinctly beneath the median part. 
Thus it does not seem to be identical with any described species. It differs 
from O. inversum Wittr. in being moncecious and in opening with a pore, 
and from ©. eryptoporum Wittr. in the, more inferior position of the pore and 
relatively longer cells. 
Sterile species of Œdogonium occurred in Nos. 338, 384, 638, 812, 852, 
1242, 1359, and 1986. 
