5Q6 



FRESH-WATER BIOLOGY 



Fig. 899. Stephanops in~ 

 termedius Burn. X 350. 

 (After Weber.) 



Fig. 900. Coturus grallalor 

 Gosse. X37S. (After Webet 



Fig. 902. Cochlearet urho Gosse. 

 X 200. (After (josse.) 



Fig. 903. Scaridium Imgl- 

 caudum Ehr. X 200. 

 fAfter DixoD-NuttaU.) 



Fig. 901. Metopidia ehren- 

 bergii Perty. X 400. (After 

 Jeimlngs.) 



Fig. 904. Dino^haris pocillum Ehr. A, Female. B, Male. 

 X 300. (After Weber.) 



