PLATE XII. 



villea Elliottii. Habit of plant, nat. size. (Grenada, II'. R. Elliott, spirit specimens in 

 lliih. Mus. Brit. . [See also fig. 99 on plate XI]. 



I [oo. Ditto. Frond-filaments of same 100. They are cylindrical, sometimes slightly torulose, colourless 

 or brown. 



! rainvillea Gardineri \. & E. S. Gepp. Habit of plant, '/_, nat. size (Cargados Carajos, 30 



fathom-. 7. S. Garditu 

 102. Ditto. Frond-filaments of same 100. They are markedly torulose, not tapering, are faintly 

 chlorophyllose, sometimes pale brown; apices slightly tortuous, free. 



I 103. AvrainvilUa pacifica n. sp. Habit of plant, nat. size. (Fualopa, Funafuti Expedition, spirit spe- 

 cimen in II al'. Mus. Brit.). 



Fig. 104. Frond-filaments of same 100. They are markedly torulose, tapering, faintly chlorophyllose, 

 sometimes pale brown; apices tortuous or hooked. 



