264 MR. W. WEST ON SOME FRESHWATER 
On some Freshwater Algx from the West Indies. 
By Wo. West, F.L.S., assisted by G. S. West. 
[Read 1st February, 1894.] 
(PuatEs XIII.-XVI.) 
Turoven the kindness of Mr. George Murray, of the British 
Museum, I have been enabled to examine some Freshwater Alge 
which were collected by Mr. W. R. Elliott on the islands of 
Dominica and St. Vincent—from the former in November and 
December 1892, and from the latter in May of the same year. 
The material was preserved in weak spirit, and has proved to be 
very interesting. The alge were in numbered bottles; these 
numbers are used throughout the paper, as both material and 
slides, with corresponding numbers, can be consulted in the 
Museum. 
The strictly aquatic species were mostly from warm or hot 
streams. Three of the gatherings were from mossy trees; these 
latter must have been very moist, as several species of Desmidiex 
occurred amongst the various Cyanophycee which formed the 
greater part of this material. Some of the species were very 
abundant, e. g. Symploca cuspidata, n. sp.; there were others 
intermingled with these, either in small patches or solitary, and 
very sparingly. 
Summary. 
Varieties 
Genera. Species, and Forms. 
Confervaceze .......... 2 2 
Chroolepidee .......... 1 2 
Zygnemacew® .......... 1 1 1 
Desmidiaceew .......... 3 6 1 
Volvocinee............ 1 1 
Protococcacee.......... 2 2 
Nostocacee............ 1 2 
Scytonemace®.......... 3 7 
Sirosiphoniacew ........ 2 7 1 
Oscillariacee .......... 3 4 1 
Chroococcacer ........ 6 12 1 
Diatomacee............ 8 14 1 
33 60 6 
Of the above, 11 species and 4 varieties are new. 
