270 



ANIMAL COLOKATION. 



In certain moths, where the female is partly degenerate, the 

 male is not very brightly coloured. A striking case of this is- 



Fig. 33, — NlOHT-JAR. 



afforded by the Yapourer moth (see fig. 15) : the female is 

 here wingless, and does not therefore get very far away from 

 the cocoon ; the male is comparatively plainly coloured. In the 



