6o4 



FRESH-WATER BIOLOGY 

 A 



Fig. 921. A, Brachionus punciatus Hempel. X 400. (After 

 Dixon-Nuttall.) B, Male of Brachionus quadratus Ronsselet. 

 (After Marks and Weschfi.) 



Fig. 922. Brachionus pala Ehr. 

 X 160. (After Weber.) 



Fig. 923. Corona of Brachionus 

 angtUaris Gosse. (After Wesen- 

 berg-Lund.) 



Fig. 924. Schizocerca dhersicomis 

 Daday. X 300. (After Wier- 

 zejski.) 



Fig. 925. Brachionus mollis HempeL 

 X 280. (After Hempel.) 



Fig. 926. Noteus gua^ricorms 

 Ehrenberg. X 144. (After 

 Hudson and Gc^se.) 



