594 



FRESH-WATER BIOLOGY 



FIG. 892. Cathy Pna luna Ehr- 

 enberg. X 245. (After 

 Jennings.) 



FIG. 894. Monostylalu 

 naris Ehrenberg. X 21 

 (After Jennings.) 



FIG. 893. Euchlanisma- 

 crurct Ehr. X 200. 

 (After Weber.) 



FIG. 896. Ratlulus 

 cylindricus Imhof . 

 X 170. (After 

 Jennings.) 



FIG. 895. Diurella sulcata 

 Jennings. X 35. (After 

 Dixon-Nuttall.) 



FIG. 897. Raitulus latus 

 Jennings, r, right toe; 

 /, left toe. X 225. 

 (After Jennings.) 



FIG. 898. A, Rattulus 

 longiseta Schrank. X 

 200. B, Trqphi of same. 

 (After Jennings.) 



