group of Butterflies, Potaro District, British Guiana, 423 
Heliconide. 
Having reviewed the whole of the J/thomine of the 
group one turns to the Heliconidy. The members of 
this family form much the closest mimics, and the varied 
series of Heliconius nwmata makes a remarkable “ pair” 
in all its forms to the equally variable Melinxa mneme. 
The association of all the Heliconius species within the 
group must be very ancient as there is never any great 
divergence from some one or other of the Melinzas. It 
is a remarkable fact that while there are many other 
differently coloured Heliconius species in the neighbour- 
hood they are never (? absolute) found on the white 
blossoms of the Eupatorium. 
Four species of Heliconius have occurred that belong 
to the group. It is possible that one of these, H. ewcoma, 
is not distinct from H. nwmata. But it is just probable, 
if unlikely, that several of the supposed aberrations are 
really distinct. Thirty-three of what have been all 
called H. nwmata have occurred. These are tabulated 
as follows :— 
HeELicontna—Genus Heliconius. 
Heliconius numata.—tThirty-three specimens received 
in all. 
UPPER-SIDE. UNDER-SIDE. 
Hind-wing narrowly banded 
lack %’s 5 7 ee se ee — 
Hind-wing widely banded black | 19 = 58 ¥ aa 
Hind-wing with band almost 
submerged with outer margin ei 7, -— 
Hind-wing with band totally 
submerged . eu oe meson) G7 — 
33 = 
It will be seen that by far the largest percentage have 
the hind-wing very broadly (but very variably) black 
banded and that the extreme darkening is quite of rare 
occurrence, only 6 having been seen from the Potaro 
District. It is interesting to note that not a single 
* One of these may prove to be a distinct species, having a much 
narrower wing and a much broader yellow post-median band. 
