IO2 CTENOPTILUM. 



nation of third median nervule, this portion also being slightly excavated, 

 from third median nervule to inner angle strongly inwardly oblique, also 

 slightly concave ; inner angle rather acute ; inner margin sinuous ; costal 

 nervure very short, not nearly reaching opposite to the apex of the discoidal 

 cell ; first, second, and third subcostal nervules also very short, rapidly reaching 

 the costa, fourth subcostal long, extending to apex of wing, the bases of all 

 the subcostals nearly equi-distant ; terminal portion of subcostal nervure 

 reaching outer margin below apex of wing ; discoidal cell long, narrow, 

 reaching to more than half though less than two-thirds the length of the 

 wing ; upper disco -cellular nervule short, straight, outwardly oblique ; middle 

 and lower disco-cellulars straight, slightly inwardly oblique, the lower a 

 little longer than the middle ; second median nervule arising considerably 

 before the lower end of the cell ; first median arising much nearer to the 

 base of the wing than to the lower end of the cell ; submedian nervure sinuous, 

 following the outline of the inner margin ; internal nervure short, running 

 into the submedian nervure as usual. Hindwing, with the base of the 

 costa much produced, thence gently curving to apex ; outer margin slightly 

 produced tooth-like at apex of first subcostal nervule, very strongly at third 

 median nervule, thence inwardly oblique to anal angle and slightly con- 

 cave ; anal angle rounded ; inner margin nearly straight ; costal nervure curved, 

 reaching the apex of the wing ; first subcostal nervule originating long before 

 the apex of the discoidal cell ; disco -cellular nervules of equal length, 

 almost straight, slightly outwardly oblique ; discoidal nervule fine but quite 

 distinct ; second median nervule given off close to the lower end of the cell ; 

 first median arising nearer to lower end of the cell than to the base of the 

 wing; submedian and internal nervures almost straight. Antenna about half 

 as long as the costa of the forewing, with a well-formed club ; thorax rather 

 stout ; abdomen rather slender, not quite reaching to anal angle of hindwing. 

 Male with no secondary sexual characters on the wings, but with a dense 

 tuft of hairs attached to the anterior end of the tibia of the hind legs, the 

 hairs extending to the apex of the first joint of the tarsus. Female like 

 the male, except that the wings are rather larger and broader. Type, the 

 " Achlyodes" vasava of Moore. 



Ctenoptilum is evidently nearest allied to Odontoptilum, mihi, but differs 

 considerably in the outline of the wings, in the shortness of the costal 

 nervure and subcostal nervules of the forewing, and especially in the 

 setose clothing of the legs of the male, in Ctenoptilum the hairs are much 

 longer and do not form such a large and dense mass as in Odontoptilum, 

 and are attached to the tibia of the hindlegs instead of to the coxa of the 

 forelegs. 



As far as is known to me, the genus contains but two species, which 

 occur in Sikkim, Assam, and Burma. They probably rest with wide out- 

 spread wings." (de Niceville, I. c.) 



