216 



Mr. S. B. J. Skcrtclilj on the 



Name. 



Vanessa urticoe ' S 



j 



Anthocbaris cardamiues . . (S 



Apatura iris i c? 



Pieris rapa3 



Ilestia leuconoe 



Ornithoptera Brookeaua 



<D Hi 



If we take species in which the brilliancy or beauty resides 

 in different sexes, we find an equal dissimilarity in the court- 

 ship : — 



Now, according to the theory of sexual selection, 



1. In H. janira the female has become bright because 



the male chose her. 



2. In A. cardamines the male has become bright be- 



cause the female chose him. 



So far all is clear: in both cases the bright sex was the wooer 

 and the dull one the chooser, and we often see the chooser 

 refuse the wooer, thus exercising a selection. The wooed is 



