EXPLANATIONS AND REFERENCES, 

 PLATE LXXVI. 



Figures magnified 250 diameters. 



PAGE. 

 Fig. 1. OEDOGONIUM GRANDE, oospore and two impeifeot zoospores 



attached to filament. . . .95 



Figs. 2, 3. OEDOGONITJM CRASSUM, .... 74 



Fig. 4-0. OKPOGONIUM GTGANTEUM, . . . 94 



Figs. 7, 8. OEDOGONIUM KIVULARE, Var. major, 92 



