59° 



FRESH-WATER BIOLOGY 



Fig. 878, B. 



Fig. 878. A, Notommala aurila 

 Ehr. X200. (After Weber.) 

 B, corona. (After Wesen- 

 berg-Lund.J 



Fig. 878. A . 



Fig. 880. Male of Synckaela tremu'a Ehr. 

 X300. (After Rousselet.) 



Fig. 879. Eosphora digilala 

 Ehrenberg. X 78. (After 

 Weber.) 



Fig. 881. Nolommata Fig. 882. Polyarthra platypt^a 

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

 (After Cohn.) 



Fig. 883. Female of Synchaeta Fig. 884. Corona of Synchaela baltka Ehr. Fig. 885. Anarihm ap- 

 slyhta Wierz. X 22s. (After seen from above. (After Rousselet.) tera flood. X 220. 



Rousselet.) (After Hood.) 



