428 Mr. W. J. Kaye's Notes on the dominant MiiUerian 



localities even as close as Venezuela and Trinidad Z. cere& 

 occurs, and never shows the deep black colour on the 

 hind-wing, while L. fasinuntia has its home almost 

 confined to Guiana and yet does not conform to the local 

 influence to so great an extent nor in such a large pro- 

 portion of the specimens. Both species occur chiefly in 

 the long dry season which usually sets in at the end of 

 August and lasts up to nearly the close of December, but 

 odd specimens may be turned up at most times of the 

 year, and I personally took several of each in May 1901, 

 when the rainy season had begun in earnest a montli 

 previously. 



As has already been seen with the Ithomiines the 

 darkening of the hind-wing is far more pronounced on the 

 upper-side, in fact on the under-side there is always a well 

 defined area where the dark scales fail to obliterate the 

 band. Tabulated, Lycorea ceres works out thus : — 



We thus find that on the upper-side the specimens with 

 a wholly and partially obscured band number 70 %, while 

 on the under-side they only number 10 %, while the banded 

 forms claim no less than 90 %, an almost complete reversal 

 of the one to the other. 



That this species should vary so in regard to the 

 colouring of the hind-wing is not to be surprised at, but it 

 is very remarkable that the pattern of the fore-wing 

 should remain so constant, as there is never any tendency 

 to the form atergatis, such as is so frequently met with in 

 Trinidad, nor is there any tendency to darkening of the 

 fore-wing, such as is frequent in Peru, proving by the 

 latter case that the species is in no need of adopting a 

 more uniformly dark aspect, even though it is able under 

 certain conditions to do so. The interest centring round 

 Lycorea ceres must always be considerable. It is a species 

 that occurs in one or other of its forms throughout nearly 



