J ourn. Linn, S o c ,3 o t Vol oO 18 94 . 



un soLie FreslTY/aoer xil^jue from the Jest ^^'^ '^'^^ 

 Indies* 3y Wm. West, F.L.S. asbistea ^^TANiCA 

 by a. S. West. (Read Xst Feo. lb 94) Qakoen 



I'lates :CIII. -XVI.: 



Through the kindness oi Kr Geor,-e llur- 

 "ra^^. of the iritish Iluseuci.I have been 

 enabled to examine some Freshwater Algae 

 v/hioh v/ere oollected by ]:r. W. R, Elliott 

 on the islands of Dominica and 3t, Vincent 

 from the former in Jlovember and December 

 1892, and from the latter in l.-ay of the 

 same year. The material v/as preserved in 

 weak spirit, and has proved to be veiy 

 interesti:.^ . The algae were in numbered 

 bottles; these numbers are used throu.^rhout 

 the paper, as both material and slides, 

 v;ith corresponding" nuDibers, can be consul- 

 ted in the l-useum. 



The strictly aq^uatic specieB were mostly 

 xrom warm or hot streams. Three of the 

 gatherings were from mossy trees; these 

 latter must have oeen very- must have been 

 vei\' moist, as several species of Desmidieae 

 occurred amon::st the various Gyanophyceae 

 which formed the /^reater r^art of this mat- 

 erial. Some at' the species v/ere very 

 abundant, e. g. Symploca cuspidata, n. sp . ; 

 there were others inteimiiigled with these, 

 either in small patches or solitary, and 

 very sp a r i n;:ly . Va r i e 1 1 e s 



Summary. Genera. Species. & Forms. 



Gonf ervaceae 2 E 



Ghroolepideae 1 E 



Zygnemaceae 1 1 1 



Desmidiaceae 3 6 1 55 



Yolvocineae 1 1 ^ 



Protococcaceae I] Z lo 



ITostocaceae 1 Z 



Scytonemaceae 3 7 ^^ 



Sirosiphoniaceae .... 7 1 ^ 



Oscillariaceae ..... 3 4 1 



Ghroococcaceae ..... 6 12 1 



Liatomaceae 8 14 1 



33 60 6 ' 



Of the above, 11 species and 4 varieties are new 



