594 



FRESH-WATER BIOLOGY 



Fig. 8ps. Diurella sulcata 

 Jennings. X 3S°' (Aftet 

 Dixon-Nuttall.) 



Fig. 897. Ratltilus latus 

 Jennings, r, right toe; 

 t, left toe. X 22s. 

 (After Jennings.) 



Fig. 89S. A, Rallulus 

 longiseta Schraak. X 

 200. B, Troplii of same. 

 (After Jennings.) 



