296 JOURNAL, BOMBAY NATURAL HISTORY SOCIETY, Vol. IX. 



on the underside appears to be entirely absent in that species, and the 

 orange areas on the hindwing are also smaller in C. icetoides. 



Described from two male specimens kindly sent to me by Mr. H. 

 Fruhstorfer and taken by himself at Sukabumi, W. Java, 2,000 feet, 

 in 1893, and from a single male in the collection of Hofrath Dr. L. 

 Martin, taken in the Battak mountains of North-East Sumatra in 

 March. 



Genus OPS, nov. 



Male. Forewing, ample ; costa regularly arched throughout its 

 length ; apex rather acute ; outer margin convex ; inner angle round- 

 ed ; inner margin nearly straight, slightly concave in the middle ; 

 costal nervure terminating on the costa about opposite the apex of the 

 discoidal cell ; first subcostal nervule arising nearer to the apex of the 

 cell than to the base of the wing, near its origin slightly bent towards 

 the costal nervure ; second subcostal arising nearer to the origin of 

 the first subcostal than to the upper disco-cellular nervule ; third 

 subcostal arising nearer to the apex of the wing than to the apex of 

 the cell ; upper disco-cellular nervule minute, outwardly oblique ; 

 middle and lower disco-cellulars upright, in one straight line, the middle 

 shorter than the lower ; second median nervule arising well before the 

 lower end of the cell ; first median arising rather less than twice as far 

 from the second as the second does from the third ; submedian nervure 

 slightly sinuous ; a large round discal patch of androconia on the upper- 

 side of the wing occupying the outer end of the cell, anteriorly bounded 

 by the second subcostal, posteriorly reaching to the middle of the 

 first median interspace. Hindwing, with the costa greatly arched 

 at the base, regularly arched to the apex ; apex well rounded ; outer 

 margin straight as far as the second median nervule when it is sudden- 

 ly angled, from this tooth-like projection the outer margin is sinuated 

 as far as the anal lobe ; anterior to the anal lobe is an excavation ; 

 abdominal margin convex ; tails two, of nearly equal length, the inner 

 rather the longer perhaps, arising from the terminations of the sub- 

 median nervure and first median nervule ; costal nervure much arched 

 at the base, regularly arched to the apex of the wing ; first subcostal 

 nervule also arched at the base, arising well before the apex of the cell ; 



