282 Professor E. B. Poulton on Mimetic Forms of 



the account (in Trans. Ent. Soc. Lond, 1904, p. 684) of the 

 equal number of males in the family bred in 1902 by Mr. 

 G. F. Leigh, it will be seen that the latter possess as a 

 whole far darker submarginal bands on the hind-wing. A 

 single male (Plate XVII, Fig. 6) and that by for the 

 darkest of the 1904 family is about as dark as one of the 

 medium specimens of 1902. The other five are far less 

 dark than any except the dwarfed " specimen 6." It is not 

 necessary to describe and compare the condition of the 

 submarginal bands, inasmuch as the whole series is figured, 

 and this is a character which can be reproduced with great 

 fidelity, and can be as well compared in somewhat reduced 

 figures as in those which represent the natural size. 



The hind-wings of these males, less heavily marked as 

 compared with the 1902 and 1903 groups, probably 

 exhibit seasonal differences, and the same explanation 

 is even more certain for the under-side coloration, which is 

 darker and more uniform in the specimens here described. 



It will be noticed that the inner border of the black 

 margin of the fore-wing is strongly serrated in Fig. 5, less 

 so in Figs, 4 and C. This serration is characteristic of 

 both male and female in the ancestral Papilio meriones of 

 Madagascar, but strangely enough it does not reappear in 

 the most ancestral of the continental males which I have 

 had the opportunity of examining. I do not find it in 

 P. antinorii (3 males), P. pohitrophus (5 males), or in 

 P. mcrope from the west coast. It appears however in a 

 small proportion of the males from the northern end of the 

 Victoria Nyanza and in the southern and eastern cenca. In 

 the latter case it is to be found not uncommonly among 

 the captured specimens as well as among those that have 

 been bred. It is certainly remarkable that this ancestral 

 feature should on the continental area be chiefly found in 

 the most highly specialized of all tlie sub-species, — cenea 

 of the south and south-east. 



(13) The females. 



The to-ophonius offspring (Plate XVIT, Fig. 7) is seen to 

 be a perfectly normal example of the .southern type. As 

 regards the cenea forms, the relative development of buff 

 and white in the spots of the fore-wings may be shown by 

 comparison with the earlier family classified on p. 681 of 

 Trans. Ent. Soc. Lond. 1904. 



