BUTTERFLIES. 169 



the rains' form, having the underside pale greyish-brown instead of 

 rich green. 



444. Catophaga paulina, Cramer. 



Rare in Sikhim, where it occurs sporadically from April to 

 October. It is found also in Western China. 



445. Appias HiPPoi'DES, Moore. 



One of the commonest butterflies at low elevations in Sikhim, 

 and flies from March to December. 



446. Appias vacans, Butler. 



Described from Darjeeling, but very doubtfully distinct from 

 A. hippoideSy Moore. 



447. Appias libythea, Fabricius. 

 Occurs rather rarely at 2,000 feet in May. 



448. Appias need, Fabricius, 



The Indian form of this wide-ranging species has been named 

 A. galha by Wallace, but it seems to be barely distinct from the parent 

 form. It is a mere straggler in Northern India. Mr. Otto MoUer 

 obtained one specimen from Sikhim, Mr. Wood-Mason obtained one 

 in Cachar, and the Rev. Walter A. Hamilton a few in the Khasi 

 Hills. It is fairly common in Upper Burmah. Messrs. Grose Smith 

 and Kirby have recently described A. neho from Upper Burmah, which 

 is probably nothing but a dry-season form of A. nero. 



449. HiPOSCRiTiA LALAGE, Doubleday. 



Occurs from the level of the Terai to over 10,000 feet, and flies 

 from April to October. The females seem to be found chieflyat high 

 elevations. This is also the case with Delias helladomia, Fabricius, and 

 Prioneris thestylis, Doubleday. 



4.50. HiPOSCRiTiA PSEUDOLALAGE, Moore. 



This species was described from Sikhim, but I know nothing 

 regarding it. Colonel Swinhoe records it from the Khasi Hills. It is 

 very doubtfully distinct. 



451. HiPOSCRiTiA iNDRA, Moore. 



The males are common at low elevations from April to October, 

 the female, as usual in this genus, is excessively rare. 



452. HiPOSCRiTiA MAHANA, Moore, 



I know nothing of this species, which was described from 

 Darjeeling, and recorded from tlie Khasi Hills by Colonel Swinhoe. It 

 is said to be allied to JI. indra^ Moore. It is possibly a seasonal form 

 only of that species. 



