134 BUTTERFLIES. 



122. 'Helci'EA hemina, Hewitson. 



A very rare butterfly, which occurs singly during the summer. 

 It is less rare in the Daliug division of Darjeeling, where it occurs at 

 4,000 feet. Mr. Dudgeon once took a specimen himself at 3,000 feet 

 in Darjeeling, and found that it flies very swiftly, which may help to 

 account for its scarcity in collections. Nearly all sj)ecies of butterflies 

 have their head-quarters somewhere where they are common, however 

 rare they may be elsewhere, but II. hemina seems to be rare every- 

 where. Perhaps its day is over, or nearly so, and the species is 

 gradually dying out. Or its head-quarters still have to be discovered. 

 H. superha, Leech, from Western China, is an allied species. 



123. Sephisa CHANDRA, Moore. 



The males of this species are not very common and are found at 

 low elevations in the summer. The females are exceedingly rare and 

 very variable, and appear to be in process of mimicking some species 

 of Danalmc. The larva of the Western Himalayan species, 8. dichroa, 

 Kollar, feeds on oak. S. princeps, Fixsen, from Corea, is an allied 

 species, a local race of which from Western and Central China has 

 been described by Mr. Leech as 5. princeps^ var. alhimacula. 



1 24. DlLlPA MORGIANA, Westwood. 



Mr. A. V. Knyvett's collectors have obtained this species in 

 Bhutan. I have not heard of its being captured in Sikhim, though it 

 certainly occurs there. It has a very wide range, from the extreme 

 end of the Himalayas to the west, through the Naga Hills and Shan 

 Hills to the Black River in Upper Tonkin on the east. D. fenestra, 

 Leech, from Western China (=:"/1/>«^Mra " c/m-^sms, Oberthiir) is said 

 to be allied to D. morgiana. 



125. Ai'ATURA NAMOUNA, Doubleday. 



Males not rare at low elevations throughout the summer ; females 

 very scarce, as is usual in this genus. 



126. Apatura chevana, Moore. 



A rare species at low elevations. It is a perfect mimic of some 

 species of Afhyma — say of A. opalina, Kollar ; so much so, that it was 

 originally described in the genus Ath>jma. I have specimens from 

 Upper Burmah, and it is found in Western and Central China. 



127. Apatura sordida, Moore. 



Also rare, and occurs at low elevations only. It is one of the few 

 species which appears to be found in Sikhim and nowhere else. 

 Mr. Dudgeon has three males and three females from native Sikhim 

 taken in October and November. 



128. Apatura parvata, Moore. 



Has been obtained by Mr. T. A. Hauxwell at about 4,000 feet in 

 October below the station of Darjeeling, but it is very rare in Sikhim, 



