596 JO VRNAL, BOMB A Y NA TVRAL HISTOR Y SOCIETY, Vol . XI. 



268. Parnassius jacquemontii, Boisduval. 



Not so common as P. hardwickii, Gray, and occurs at higher eleva- 

 tions nearer the snows further in the interior. We have specimens 

 taken in the Nila Valley and Nila Pass, and from the Nilung Pass in 

 July and August, at elevations from 12,000 to 15,000 feet v We 

 have followed M. Charles Oberthiir in '' Etudes d'Entomologie," 

 vol. xiv, p. 9 (1891), in identifying our specimens, our males agree- 

 ing with the figuro of the typical specimen of P. jacquemontii in 

 M. Oberttmr's collection as given by the latter on plate ii, fig. 11, of 

 the above-cited work. Our females have the pouch keeled as described 

 by Boisduval. 



269. Parnassius charltonius, Gray. 



Pare, flies in July and August at great elevations, above 14,000 

 feet, on the inner ranges of the hills north of Mussoorie just below 

 the snows. 



Family HESPERIID^E. 

 270. Achalarus casvapa, Moore. 



Common in Mussoorie, from whence it was originally described, from 

 April to September. Messrs. Elwes and Edwards in their recent mono- 

 graph # of the Oriental Flesjoeriidce place (p. 109) A. casyapa as a syno- 

 nym of A. liliana, Atkinson, but the Western Himalayan species can at 

 once be distinguished from the Assamese species by its paler coloration. 



271. CEL.3ENORRHINUS DHANADA, Moore. 



Rare in Mussoorie from April to June, and in August and Sep- 

 tember. 



272. Cel^norrhinus leucocera, Kollar. 



Very common in Mussoorie from April to September. The larva 

 feeds on Strobilanthes angustifrons, Clarke, Natural Order Acanthacece. 

 The " Plesioneura " sumitra, Moore, is probably a synonym of this 

 species, but is kept distinct by Watson. Colonel Lang's specimens of 

 this species are so named. 



273. Cel^norrhinus munda, Moore. 



Flies in Mussoorie from April to September. Capt. E. Y. Watson 

 in Proc. Zool. Soc. Lond., 1893, p. 49, places this species as a 

 synonym of C. Uucocera^ Kollar, but it is really quite distinct, the 

 prominent white-checkered cilia of the hind wing and the shaft of the 



* Trans. Zool. Soc. Loud., vol. xiv, p. 101 (1897). 



