420 Mr. W. J. Kaye's Notes on the dominant Milllerian 



upper-side, but again on the under-side there is a most 

 interesting minor piece of variation. It is that there are 

 indications of the formation of a black patch in the centre 

 of the wing by the presence of a long black streak between 

 veins 6 and 7 extending inwards towards base of wing. 

 From 32 specimens examined the following are the tabulated 

 results : — 



Under-side with black streak well developed 6 = 19 % 



Under-side with black streak slightly developed 14 = 44 % 

 Under-side without black streak 12 = 37 % 



32 



Thus no less than 63 ^ show some slight development 

 towards the pattern of Melinma crameri on the under-side. 



The other Melinma, M. mnasias, is only represented by 

 a single specimen and is probably only a wanderer to the 

 Potaro district, its home being further south on the 

 Amazons. As a link with the Ceratinias it is extra- 

 ordinarily close, and indeed when sitting with closed wings 

 would be even passed over by a skilled collector, so alike 

 is it to a larcre Ceratinia euclea. 



Mechanitis 'pannifera. 



This is a most variable species and is very common. 

 The $ is apparently quite rare compared to the male 

 as I find I have only three in a series of 56 examples. 

 The likeness however of these females, and one in 

 particular, to the darkest forms of Ilelinisa mnevie is 

 extraordinary, for not only is the pattern and marking 

 so clos( but the greatly enlarged size give the insect a 

 look much more in general like the Melinieas than the 

 smaller and narrower Mechanitis species. 



The 56 specimens divide up as follows: — 



