S88 



FRESH-WATER BIOLOGY 



Fig. 870. Furcularia Fig. 871. Furcularia 

 Jorficula Ehr. X 300. longiseta Ehr. X 400. 

 (After Weber.) (After Dixon-Nuttall.) 



Fig. 872. Diglena ros- 

 trata Dixon - Nuttall. 

 X 320. (After Dixon- 

 Nuttall.) 



Fig. 873. Distemma set- 

 igerum Ehrenberg. 

 X 166. (After Ehren- 

 berg.) 



Fig. 874. Triophthalmus Fig. 875. Alhertia iw Fig. 876. Pleurotrocha Fig. 877. Taphrocampa 



dorsualis Ehrenberg. trusor Gosse. X 13S. grandw Western. X 125. annulosa Gosse. X I4» 



X80. (After Ehren- (After Gosse.) (After Dixon-Nuttall.) (After Weber.) 

 berg.) 



