Lepidoptera of Sikkim. 415 
373. Dercas Wallichii. 
Gonepteryx Wallichii, Doubl., Proc. Ent. Soc. Lond., 
v., p. 47 (1849). 
? Dercas Wallichii, Elwes, P. Z. S., 1882, p. 402. 
? Gonepteryx urania, Butl., P.Z.8., 1865, p. 458, 
t. xxvi., fig. 5, 2. 
The single specimen which I mentioned before as 
having been brought from the interior by native collectors 
is the only one I have ever seen or heard of from Sikkim. 
On comparing it again with Butler’s plate, I think that 
his species is probably the female, as the differences 
shown in it are much the same as those which are found 
in the two sexes of D. verhuelli, but the abdomen being 
wanting in the type of urania, it is not possible to say 
this with certainty. 
374. Pieris (Aporia) agathon. 
Preris agathon, Gray, Zool. Mise., p. 383 (1831); Lep. 
Nep., t. 8, fig. 1 (1846). 
A single specimen of this species was brought by my 
native collectors from the interior towards Bhutan in 
1883, but it has not been obtained certainly in Sikkim. 
375. Pieris Dubernardi. 
Pieris Dubernardi, Ober., Et. Ent., ie, patsy £, 1, 
fig. 6. 
This species is only known to me from some eight or 
nine specimens, which were brought by a native employed 
by the late Capt. Harman, R.E., in surveying the Tibetan 
frontier, and may not occur on this side of the passes. 
It agrees very well with Oberthir’s figure and descrip- 
tion, taken from two specimens obtained at Tsekou, in 
Eastern Tibet, which, like my own, were all males. 
376. Pieris canidia. 
Pieris canidia, Sparrm., Amen. Acad., vii., p. 504, 
note (1768). 
P. gliciria, Cram., Pap. Wx ilies 171, &, F (1779). 
Common in Sikkim at 4 to 12,000 ft. during the rainy 
season, and found, according to Moller, as low as 
F2rF 
