426 Mr. W. J. Kaye’s Notes on the dominant Miillerian 
form and shows no special influence of the main group. 
Hueides isabella, it should be mentioned here as elsewhere, 
strongly retains the pattern of the abundant JMechanitis 
polymnia, and this association is probably so ancient that 
the two species have had time to become fixed and definite. 
Both these two latter insects occur over a very wide area, 
and small variations of climate and environment have 
apparently little or no effect. 
Hueides nigrofulva. 
Of this newly discovered species twenty-five individuals 
in all have been secured. No less than twenty-two have 
been females while but three males have been taken. 
This may indicate that the males and females have 
different habits, but it may be simply that the males and 
females emerging at different times and that when the 
males were out they were either overlooked for something 
else or perhaps not looked for at all. This latter explana- 
tion seems to be more plausible when one examines the 
under-sides of the specimens as remarked on later. The 
series of females shows considerable transition from a 
moderately heavy-banded hind-wing, tending to fuse with 
the dark outer margin, to a fairly narrowly-banded form 
with no trace of fusion. 
Of the extreme dark form there are four examples, but 
in no case is the area between the central band and the 
dark outer margin uniformly black. The males, as will 
be seen by a reference to the specimen of the insect, have 
a very much less dark hind-wing, with the black band far 
more broken up into spots than is ever found in the female. 
This difference together with the absence of yellow bands 
to the fore-wing gives the male sex a very different general 
appearance above. On the under-side, however, except for 
size, these differences vanish and there is practically no 
variation in the whole series of either males or females, 
This is remarkable testimony to the efficacy of selection 
when the species is at rest. Not only do male and female 
closely resemble one another on the under-side, but they 
with closed wings have a remarkable similarity to the 
under-side of Heliconius numata, and particularly to the 
less dark individuals of that species. The series of 
white marginal spots to the hind-wing, the most in- 
teresting appearance of a yellow patch of scales beyond 
