( xvi ) 



Professor Poulton pointed out that the three families 

 differed in the details of the pattern, thus showing that .small 

 features were hereditary — a very important consideration in 

 the attempt to understand the growth of a mimetic likeness. 

 In this respect these three families from the West Coast 

 supported the conclusions px'eviously arrived at from the study 

 of Mr. G. F. Leigh's specimens (see Trans, Ent. Soc, 1908, 

 pp. 443-445). 



1. The "anal gap" in the sub-marginal black band of the 

 hindwing was widely open in all the males of Family I ; was 

 widely open in 6, narrower in 2, and closed in 10 males of 

 Family II ; widely open in 2, narrower in 2, and closed or 

 very nearly closed in 9 males of Family HI. 



2. The hipj)ocoon females of Family I possessed a larger 

 white patch on the hindwing than those of II and III. This 

 effect, which tended in the direction of Eastern and South- 

 eastern forms of hippocoo7i — mimics of the doriiinicavus,Tv'i-mQn, 

 form of Amauris niavms — was produced in part by the lighten- 

 ing to grey of the internervular black ground-colour, and in part 

 by the extension outwards of the white scales into the same 

 internervular spaces. A corresponding effect was visible on 

 the under surface. The female parent also possessed a strongly 

 developed hindwing patch, although the condition of parents 



