1883.] L. de Nic^ville— 0;z new and little-known Ul)Opalocera. 79 



nervule— all these markings placed on a rich dark brown ground ; the apex 

 and decreasinglj to the first median nervule paler and glossed with violet, 

 inwardly sharply defined, the outer margin dark brown at the apex paler 

 towards the inner angle. Sindwing with the base ol: the wing rich dark 

 brown, with a pale violet even streak from the costa to the base above the 

 cell ; a discal irregular dark brown band placed on a pale violet ground, 

 and other paler irregular markings beyond ; a submarginal lunulated 

 line, and three black spots beyond it at the anal angle almost covered with 

 brilliant green irridescent scales. Female. Uppeeside, forewing black ; 

 with the cell (all except its extreme end), the basal half of the lower 

 discoidal, median, submedian and internal interspaces irridescent light ultra- 

 marine blue. Rindwing with the middle and base of the wing blue as 

 in the forewing. Underside with the miirkings as in the male. 



The markings of the underside of the forewing of this species are 

 nearest to the Amhlypodia diardi of Hewitson (Cat. LyccenidcBB. M., 1862, 

 p. 9, pi. V, figs. 41, 42 ,?) ; they differ largely, however, in the hindvving. 



There are numerous examples of both sexes of this species in Mr. 

 Otto Moller's collection, three males and a female in Colonel Lang's col- 

 lection, and several specimens of both sexes in the Indian Museum, 

 Calcutta, all from Sikkim. 



20. Nilasera? adriana, n. sp. (Plate IX, figs. 5, $ ; 5«, $.) 

 Hab. Sikkim. 

 Expanse : $ ,1Q to 1-9 ; ? , 1'65 to 1-8 inches. 



Description : Male. Uppeeside as in N. asoha, but the black 

 bordering at least twice as wide. Underside, forewing marked as in 

 JV". asoka. Hindioing dark brown glossed almost throughout with pale 

 violet grey but exceedingly variable, in some specimens the ground-colour 

 is very pale, the markings therefore being very prominent, in others so dark 

 that they are hardly traceable ; the male specimen figured is about midway 

 between these two extremes. Three subbasal small round spots, a chain 

 of spots from the costa to the middle of the cell, another chain also from 

 the costa crossing the cell at its end, a third chain from the subcostal 

 nervure to the abdominal margin, a submarginal lunulated line, but no 

 black, green-irrorated, anal spots, which at once distinguishes this species 

 from N. asoka. Female. Uppeeside as in N. asoka, but the blue colour 

 more of a purple shade. Undeeside as in its male. 



This is apparently one of the commonest " hairstreaks " in Sikkim, 

 Mr. Otto Moller obtaining very numerous specimens of both sexes through- 

 out the warm weather. There are specimens of both sexes in Colonel 

 Lang's collection. 



