588 



FRESH-WATER BIOLOGY 



FIG. 870. Furcularia 

 forficula Ehr. X 300. 

 (After Weber.) 



FIG. 871. Furcularia 

 longiseta Ehr. X 400. 

 (After Dixon-Nuttall.) 



FIG. 872. Diglena ros- 

 trata Dixon-Nuttall. 

 X 320. (After Dixon- 

 Nuttall.) 



FIG. 873. Distemma set- 

 igerum Ehrenberg. 

 X 1 66. (After Ehren- 

 berg.) 



FIG. 874. Triopkthalmus 

 dorsualis Ehrenberg. 

 X8o. (After Ehren- 

 berg.) 



FIG. 875. Attertia in- 

 trusor Gosse. X 135. 

 (After Gosse.) 



FIG. 876. Pleurotrocha 

 grandis Western. X 125. 

 (After Dixon-Nuttall.) 



FIG. 877. Taphrocampa 

 annulosa Gosse. X 14. 

 (After Weber.) 



