Lepidoptera of Sikkim. 375 
belong to the genus Neopithecops, and places it next to 
N. zalmora in the British Museum collection. 
As regards its identity with hamada, I have six speci- 
mens from Sikkim, three from Shillong, six from Japan ; 
the latter are all plain dark brown above, whilst all the 
Indian specimens have a larger or smaller white patch 
on the fore wing. The fringes, antenne, and markings 
of the under side agree very well. A specimen from 
Tenasserim in the British Museum agrees with the 
Sikkim form. 
I have taken this insect at about 5000 ft. in July, and, 
according to Moller, it occurs at low elevations from 
April to October. 
238. Neomthecops zalmora. 
Pithecops zalmora, Butl., Cat. Fabr., p. 161 (1870). 
Parapithecops gaura, Moore, J. A. 8. B., 1884, p. 5. 
Neopithecops horsfeldi, Dist., Rhop. Mal., p. 209, 
beatin, Leta 
Pithecops dharma, Moore, Lep. Cey., i., p. 72 (1881). 
I can see no difference either in the neuration or 
markings between the insect found in Sikkim and a 
specimen from Padang, in Sumatra, which I believe to 
be zalmora of Butler; another from Kankaret, in Burmah, 
agrees with both. 
Those I have from Calcutta have a white patch on 
fore and hind wings, which is variable, according to 
de Nicéville, though used to distinguish the form named 
gaura by Moore. Horsfeldi, Dist., from Singapore, and 
Dharma, Moore, from Ceylon, are both so nearly allied 
that the incomplete and indifferent figures and descrip- 
tions given by their authors are of no use in distinguishing 
between the species of this difficult group, if, indeed, 
they are possible to distinguish. And, as I agree with 
de Nicéville in thinking that they are all one species, I 
leave it to their authors to show the contrary. 
It is common in Sikkim at low elevations from May 
to October. 
239. Megisba malaya. 
Lycena malaya, Horsf., Cat. E.1.C, p. 70 (1828), 
Pathalia albidisca, Moore, J. A. 8. B., 1884, p. 6. 
