Lepidoptera of Sikkim. 431 
from April till November. Females are rare, and differ 
slightly. 
421. Papilio macareus. 
? Papilio macareus, Godt., Enc. Méth., ix., p. 76 (1819). 
The form of P. macareus found in Sikkim is so different 
from the Bornean one, that I hardly like to retain the 
same name for it. It differs materially in the much 
greater breadth of the whitish bands on both surfaces of 
both wings, in the much more abundant hairy clothing 
of the abdominal margin, and in the smaller size; in all 
these respects agreeing better with Tenasserim and 
Burmese specimens, though some of these have the 
bands narrower than Sikkim specimens. It is not 
uncommon at low elevations during the months of May 
and June, but the females, as in the case of so many 
species of Papilio, are extremely rare. 
422. Papilio agestor. 
Papilio agestor, Gray, Zool. Mise., p. 32 (1831); Lep. 
Nepal, p. 6, t. 4 (1846). 
P. agestor, Westw., Arc. Ent., p. 59, t. 16, fig. 2. 
? Var. P. govindra, Moore, P. Z.8., 1865. p. 486. 
2, Cadugoides gopala, Moore, P. Z.§., 1882, p. 260. 
This is a rare species in Sikkim, which I have never 
seen myself, but Moller has taken it on Birch Hill at 
6—7000 ft. in May, and records it from a lower elevation 
in April as well. I can hardly tell whether the North- 
western form which Mr. Moore has separated as govindra 
is distinct or not, as, though four specimens from 
Landour are easily distinguished by their smaller size, 
different tint, and dark outer margins of the hind wings, 
yet the differences are just those which might be expected 
to be produced by a colder climate, or in an earlier 
brood, supposing there are two. PP. agestor also occurs 
in the North-west, and in the same localities as govindra. 
I have it from Kangra and Landour, but I do not know 
whether it appears in the rains or dry weather. I have 
a female from Chumba in April, which agrees with Mr. 
Moore’s C. gopala, and which is clearly inseparable ; 
but as it appears to combine the characters of both 
forms, I do not know to which to assign it, as I have no 
2a2 
