ALQ^ EfiOil THE WEST INDIES. 2(55 



" Crass, fil." (as used in this paper) = the diameter of the sheath 

 containing the trichomes. 



" Crass. trich."= the diameter o the cells without the sheath. 



Class CONFEEVOIDE^ ISOGAM-S. 

 Ord. COXFEEVACE^. 



1. CoxFEEVA BOMBTCiXA, Ag.^ forma MiNOE, Wille. {Om 

 Hvileceller Jios Conferva, p. 21, t. 1. figs. 36-iO, t. 2. figs. 55, 56.) 



Crass, fil. 6-5-7-5 ^. 



ITah. In cold, warm, and hot streams, crater of Grande Soufriere, 

 Domiaica. Nos. 880, 883, 884, and 908. 



2. Ehizoclonium Beeggeexianum, Hauch in Nordst. Freshw, 

 Alg. of New Zeal. Sf Australia, p. 17. Yar. dominicense, nov. 

 var. (PL XIV. figs.' 17-24). 



Yar. filamentis dense intricatis, tenuior, articulis diametro 

 2-3plo lougioribus ; membrana cellularnai 1 /i crassitudine. 



Crass, cell, veget. 9-10 /i. 



Sab. In hot stream in crater of Grande Soufriere, Dominica. 

 No. 880. 



In the more densely intricate portions almost every cell emitted 

 a short lateral branch, usually consisting of one cell. 



Ord. Cheoolepide^. 



3. Teextepohlia odoeJlTA, Wittr. (Scand. Vdxter. t. 4. p. 16.) 

 [Chroolepus odoratum, Ag. Syst. Alg. p. 35.] 



Crass, cell, veget. 12-20 /x ; crass, zoogonidang. 33-37*5^. 



T. zoogonidangiis lateralibus, iuterdum terminalibus, subglo- 

 bosis, sessilibus (bine inde pedicellatis). 



Hah. On bark. Bow-wood Hills (1580 ft.), St. Yincent. 

 (8-12-91.) No. 23. On trees, Government House, St. Yincent, 

 900 ft. (10-12-91.) No. 27. 



4. T. YiLLOSi, Be Tom. (Sgll.^ Alg. i. p. 239.) [Chroo- 

 lepus villosa, Kuetz. JPhyc. gener. p. 2S4 j Species Algarum, 

 p. 428.] 



Crass, cell, veget. 18-23 /i. 



Hah. On rocks, Soufriere, Dominica. (2-7-92.) No. 20. 



LINN. JOUEN. BOTANY, TOL. XXX. XT 



