200 MISS L. 8. GIBBS: A CONTRIBUTION TO 
DICHONEMIACE.E. 
DICHONEMA SERICEUM, Mont. т Bél. Voy. Ind. Or., Crypt. 155, t. 14. f. 1 
(1834-38). 
Nadarivatu, 2700, on trees in forest. Sept. 855. 
Distrib. Tropics and sub-tropics. 
A very general species, composed of superposed fan-shaped thalli forming 
vertical lines on the trunks of trees, resembling Pavonia. Grey-green in 
colour. 
СНАВАСЕ М. (Mr. H. Groves.) 
NITELLA GRACILIS, Ag. Syst. Alg. 125 (1824). 
Near Waikubakuba, on the Tavua road, 500. Оп soapstone, in stream. 
Sept. 762. 
Distrib. Cosmopolitan. 
I rather think this is the same plant that Dr. Allen described as 
N. Muthuata from Fiji, but it differs much in appearance from his drawing— 
I have not seen а specimen—and breaks down his specific characters. 
ALGJE. (Mr. W. West.) 
CHLOROPHYCE. 
CEDOGONIUM sp. 
Base of Koro Levu, 500, in stream. Sept. 763. 
Sterile, cells 24-404 ш broad, 4 to 5 times longer than broad. 
CEDOGONIUM sp. 
Nadarivatu, Sigatoko river, 2700, free floating. Sept. 845. 
Cells 6°5-8°5 p broad, 10 to 12 times longer than broad; no mature oospores. 
RHIZOCLONIUM HIEROGLYPHICUM, Kütz. em. Stockm. 
Nadarivatu, source of Sigatoko, 2700. Sept. 775. 
Distrib. Samoa. Central and 8. Europe. М. & S. America. 
SPIROGYRA 8р. 
Nadarivatu, Sigatoko river, 2700, free floating. Sept. 845 p.p. 
Sterile, cells 10-12 д broad, 10 to 12 times longer than broad ; chromato- 
phores two. 
CLOSTERIUM эр, 
Base of Кого Levu, 500, in stream. Sept. 768 p. p. 
Had been dried ; probably C. Ehrenbergii, Meneg. 
