324 



SEXUAL SELECTION. 



[Part IL 



male was again put into the f;anic vessel and he then, after 

 swimming about for a time, dashed into the crowd, and 

 without any fighting at once took away his wife. This 



Fig. 7.— Orcbeatia Darwinii (from Fritz Muller\ sliowing the differently-con- 

 structed chela of the two male forms. 



fact shows that in the Amphipoda, an order low in the 

 scale, the males and females recognize each other, and are 

 mutuallv attached. 



