834 Mr. H. J. Elwes’ catalogue of the 
probably collected by Major Sherwill and marked Dar- 
jeeling. This, however, may have come from Bhotan, 
as the species has been recently re-discovered near 
Buxa by Mr. Knyvett, who has procured it in some 
numbers, and in both sexes. There are a considerable 
number of species recorded from Sikkim, which are 
either of doubtful occurrence or extremely rare there, 
and which occur not uncommonly at Buxa. As the late 
Mr. Mandelli was in the habit of sending his collectors 
to the Bhotan Terai, and many officers were employed 
there during the Bhotan war, who afterwards came to 
Darjeeling, it is impossible to say whether these really 
occur west of the Tista or not. 
93. Clerome arcesilaus. 
Papilio arcesilaus, Fab., Mant. Ins., u., p. 28. (1787) ; 
Don., Ins. Ind., t. xxx (1800); 
Clerome arcesilaus, Doubl., Hew., Gen. Di. Lep., ii., 
p. 384, t. liv. (1851); Butt. Ind., 1., p. 313. 
This also is recorded from Sikkim only on the authority 
of Mandelli’s collection, and has never been seen recently 
by Moller or myself. 
94. Amathusia portheus. 
Amathusia portheus, Feld., Reise Noyv., iii., p. 461 
(1865) ; Butt. Ind., i., p. 298, cut. 
Another species which occurs very rarely, if at all, in 
Sikkim, and which I include only on the authority of a 
male specimen in the Indian Museum, said to have 
come from there. 
95. Pareba vesta. 
Papilio vesta, Fab., Mant. Ins., ii., p. 14 Aes Don., 
Ins. China, t. xe (1799). 
Pareba vesta, Butt. Ind.,i., p. 318. 
A very abundant species in tea-plantations and cleared 
land in Sikkim at 2—7000 ft., and also very numerous 
in some places both in the N.W. Himalaya and in the 
Khasias, where I found it in the open grassy hills in 
great quantities. It occurs from April to November. I 
observed a curious horny appendage to the abdomen of 
the female in this species, which does not seem to have 
