596 



FRESH-WATER BIOLOGY 



Fig. 899. Stephanops in- 

 termedius Burn. X 350. 

 (After Weber.) 



Fig. 900. Colurus grallator 

 Gosse. X37S. (After Weber. 



Fig. 902. Cochlearet urbo Gosse. 

 X 200. (After Gosse.) 



Fig. 901. Metopidia ehren- 

 hergii Perty. X 400- (After 

 Jennings.) 



Fig. 903. Scaridium longi- 

 caudutn Ehr. X 200. 

 (After Dixon-Nuttall.) 



Fig. 904. Dinocharis pocillum Ehr. A, Female. B, Male. 

 X 300. (After Weber.) 



