LYCANIDA, ARHOPALA, 229 
Key to the Indian species of Arhopala. 
A, Hindwing with tail at apex of first median nervule. 
a. Tail long (except in No, 812, A. artegal, Doherty, in which it is short and tooth-like), 
a'. Male, upperside, both wings of some shade of blue or purple, 
a*, Male, upperside, both wings, of a blue or purple colour often shining but never metallic. 
a®, Male, upperside, both wings dark blue or purple. 
a*. Both sexes, underside, forewing with annular spots in cell. 
a°. Both sexes, expanse two inches and over. 
a®, Both sexes, hindwing with no anal lobe. 
786, A. CENTAURUS, Eastern Himalayas, Assam, Burma, Malay Peninsula, Siam, 
South India, Ceylon, Andaman Isles, Sumatra, Nias Island, Java, Borneo. 
&*, Both sexes, hindwing with an anal lobe. 
a.” Male, upperside, both wings with no outer black margin, 
cilia only black. 
787. A, aGnis, Burma, Malay peninsula, Sumatra. 
67, Male, upperside, both wings with outer black margin, 
a®, Both sexes, underside, forewing with a costal spot 
just beyond the middle. 
a®, Male, upperside, both wings margined 
narrowly with black, 
a'°, Male, forewing, outer margin straight; 
hindwing posteriorly elongated. 
Forewing, underside, second spot 
from costa of discal band larger 
than the spot on either side of it. 
988. A. SILHETANSIS, Jalpaiguri, Sylhet. 
5*°, Male, forewing, outer margin convex 3 
hindwing rounded, not posteriorly 
produced. Forewing, underside, 
second spot from costa of discal 
band of the same size as the spot 
on either side of it, 
789. A. avor#A, Sikkim, Assam, Burma, Malay peninsula. 
hs SS ee eee Ae ee ee ee ee 
Genus Nivasera, Moore. Nilasera, Moore, Lep. Cey., vol. i, p. 114 (1881), ‘* W1nGs, ample. ForEwING, 
subtriangular ; costa much arched from the base, afex acute ; exterior margin very slightly oblique and convex 
at lower angle, fosterior margin recurved; costal nervure short, extending only to one-third the margin 3 
subcostal nervules at equal distances apart, 77st subcostal at three-fifths before the end ofthe cell, fourth subcostal 
at two-thirds from the third and terminating at the apex, /th subcostal from the end of the cell; upper [szdaie] 
disco-cellulay nervule shortest, oblique, /ower disco-cellular erect; radial [lower discoida/] nervule from their 
angle ; discoidal ce long, more than half length of wing; second median nervule at one-fifth, and jirs# 
median at two-fifths before the end of the cell; submedian nervure straight. H1npwING, broadly oval; 
costa very convex ; a short thickish ¢az/ from first median nervule ; anal angle somewhat pointed and not lobed; 
costal mervure abruptly arched from base; jirst subcostal nervule at nearly one-half before the end of the 
cell ; upper disco-cellular nervule shortest, outwardly oblique, ower disco-cellular recurved; discotdal nervule 
from their angle; second median nervule at one-sixth, and rst median at one-third before the end of the 
cell ; submedian nervure nearly straight ; imternad nervure recurved. Bopy robust; thorax stout; palpZ 
porrect, second joint very flat, attenuated towards the apex, squamose, projecting half beyond the head, third 
joint slender in the female, one-third length of second; /egs squamose ; anxtenne gradually thickened towards 
the end, tip more slender. Type, VV. centaurus, Fabricius.” (Moore, 1. c.) 
Genus Pancuaca, Moore. Panchala, Moore, Proc. Zool. Soc. Lond., 1882, p. 251. ** WINGS, small, short, 
broad. ForBwina, much arched ; exterior margin erect, slightly convex hindwards; discotdal cell extending 
beyond half the wing ; costal nervure extending tonearly half the margin; first subcostal nervule emitted at 
two-fifths and second subcostal at one-fifth before the end of the cell, ¢4ivd subcostal bifid at one-third before 
the apex, /£/th subcostal from slight angle at end of the cell ; dzsco-celludar nervule slightly bent near upper 
end ; discoidal nervule from the angle; second median nervule near end of the cell, 77st median at one-fourth 
before the end, curved downwards; submedian nervure straight. HINDwING, very convex externally ; costa 
much recurved from the base, afex angular ; costal mervure recurved, extending tothe apex ; /irst subcostal 
nervule emitted at one-third before the end of the cell ; dzsco-celludar nervule slightly bent in the middle, 
discoidal nervule from the angle ; second and third median nervules from the end of the cell, rs¢ median at one- 
fourth before theend ; submedian nervure straight, internal nervure recurved. Bopy, short, ¢horax moderate ; 
palpi porrect, compactly squamose, second joint projecting half its length beyond the head, third joint one-third 
its length, slender ; egs compactly squamose ; ax¢enne@ short, thickening to the apex. Type, P. ganesa, Moore.’ 
(Moore, \.c.) Mr. Moore describes only one disco-cellular nervule in both wings, of course there are two, 
Genus SarapRa, Moore. Satadra, Moore, Journ. A. S. B., vol. liii, pt. 2, p. 38 (1884). ‘‘ ForBWING, 
comparatively longer and narrower than in typical Paxchala, Moore, the costa abruptly arched at the base, 
exterior margin oblique. HInpwinG, slighiiy but regularly arched along the costa, afex very convex, exterior 
margin oblique, with a slender ¢az/ at the end of the first median nervule, and a point at the endsof the second 
median nervule and submedian nervure. Venation similar to that of Panchala. Type, S. atrax, Hewitson.” 
(Moore, 1. c.). Mr. Moore should have mentioned the distinct lobe at the anal angle of the hindwing present in 
the type species. 
Genus Darasana, Moore. Davasana, Moore, Journ. A. S. B., vol. liii, pt. 2, p. 42 (1884). ‘' FOREWING, 
short, broad, triangular; afex acute, exterior margin very slightly oblique, posterior angle somewhat rounded. 
Hinpwine, short, broad; costa arched towards the base, exterior smargin very convex ; no fail [or anal 
lobe]. Antenne slender. Vype, D. perimuta, Moore,” (Moore, |. ¢.) : 
