PLATE XXIV. 



A. CODIUM, page 193. 



Fig. 1, C. tomentosum ; the natural size. 2, filaments 

 from the same, in fruit ; magnified. 



B. BRYOPSIS, page 194. 



Fig. 1, B. plumosa, the natural size. 2, part of a 

 branch ; magnified. 



C. VAUCHERIA, page 195. 



Fig. 1, V. submarine* ; the natural size. 2, portion of 

 a fertile filament ; magnified. 



D. CLADOPHORA, page 198. 



Fig. 1, C. falcata; the natural size. 2, small branch 

 with secund, falcate ramuli ; magnified. 3, ramulus, 

 more highly magnified. 



E. CONFERVA, page 207. 



Fig. 1, C. tortuosa; the natural size. 2, portion of a 

 filament; magnified. 



F. RHIZOCLONIUM, page 206. 



Fig. 1, jR. riparium; the appearance to the naked eye. 

 2, portion of a filament, magnified. 



