" 



" 



EXPLANATIONS AND REFERENCES, 

 PLATE LXIII. 



PAGE. 

 Fig. 1. LEMANEA TORULOSA, natural size, . 52 



" '2. magnified slightly, . 52 



" 3 small portion of filament under higher 



power, .... 52 



" 4. portion of transverse section, . . 52 



" 5 LEMANEA FLUVIATILIS, slightly magnified, . 52 



" 6. BATRACHOSPERMUM MONILIFORME, natural size, . . 57 



10. the same magnified. 



7. BATRACHOSPERMUM, Var. pulcherrimum, natural size, . . 57 



'< 8. " " " small section magnified, 57 



" 9. BATRACHOSPERMUM, Var. atrum, somewhat magnified. . 57 



