282 Professor E. B. Poulton on Mimetic Forms of 
the account (in Trans. Eni. 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 far 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 6. ‘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 m 
P. antinori (38 males), P. polytrophus (5 males), or m 
P. merope 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 cenea. 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 the sub-species,—cenea 
of the south and south-east. 
(8) The females. 
The trophonius offspring (Plate XVII, 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. 
