Plate XXXV; Figures 223 to 228; Magnified 500 Diam- 

 eters, except Fig. 228. 



Docidiitm Baculum Breb. . . page 61 



Pleurotcenium crenulatum (Ehrb.) 



Rab a 



Pleurotanium Archerii (Delp.) 



Trabecula (Ebrb.) Nag. " 

 Euastrum sp. ( ?) . . . . "63 



Fig. 228. CEdogonium cardiacum (Hass.) 



Wittr. (?) " 52 



