590 



FRESH-WATER BIOLOGY 



Fig. 878. A, Notommata aurita 

 Ehr. X200. (After Weber.) 

 B, corona. (After Wesen- 

 berg-Lund.) 



Fig. 878.^. 



Fig. 880. Male of Synchaeta tremula Ehr. 

 X300. (After Rousselet.) 



Fig. 879. Eosphora dtgitata 

 Ehrenberg. X 78- (After 

 Weber.) 



Fig. 881. Notommata Fig. 882. Polyarthra platyptera 

 torulosia Duj. X 200. Ehr. X 200. (After Weber.) 

 (After Cohn.) 





Fig. 883. Female of 5y»cAa6/a Fig. 884. Corona of 5ynctoe/a 6a//tca Ehr. ^^f; 885.;4 «ar/Ara a ^ 

 styla^ Witrz. X225. (After seen from above. (After Rousselet.) ^6ra Hood X 220. 



Rousselet.) ^^^^^ ^'^'^•^ 



