the Lepidoptera of the Khasia Hills. 299 
Genus Castanius, Hiibn. 
261. Castalius rosimon (Fabr.), Syst. Ent., 523, 341 
(1775). 
Common. 
262. Castalius ananda, de Nicé., Journ. A. §. B., lii. (2), 
Diao plemiateke Lixo © (1883). 
Shillong. Five examples. 
263. Castalius elna (Hew.), Ex. Butt., v., Lycena, pl. 1, 
frog (STG): 
Common. 
Genus Potyommatus, Latreille. 
264. Polyommatus beticus (Linn.), Syst. Nat., xi, 1., 2, 
789, 226 (1767). 
Genus IrRaota, Moore. 
265. Iraota timoleon (Stoll), Suppl. Cram. Pap. Ex., v., 
pl. 82, f. 4, 4p 2 (1790). 
Several examples, amongst them two very curious 
male varieties ; the upper side in one has very little blue 
colour; in the other it is quite as blue as any of them ; 
but the under sides of both have the hind wings of a 
uniform dark rich chestnut colour, without any of the 
usual white markings. 
Genus SurenprA, Moore. 
266. Surendra quercetorum (Moore), Cat. Lep. E. I. C., 
ia. 42 pled AS tT -gf \(1857). 
Very common. 
Genus ArHopana, Boisd. 
267. Arhopala pirithous (Moore), P. Z.8., 1883, p. 581. 
The common Khasia Hill form of the Centaurus 
group. 
268. Arhopala adorea, de Nicé., Butt. of India, iii., 
p. 238, frontispiece, f. 189 ¢ (1890). 
Recorded from the Khasias ; not received by me. 
