]894.] L. de Niceville — Butterjlies from iTie In'do -Malayan region. 51 



and Pulo Laut. Antennce black, the club beneath, except the extreme 

 tip, ochreous. Eyes with a band of dull ochreous setae encircling them. 

 £ody concolorous with the wings throughout. 



Described from a single example from the Battak Mountains taken 

 in September, and deposited in Dr. Martin's fine collection. 



Genus Ochus, nov. 



Male. Forewing, entire ; costa strongly and evenly arched through- 

 out its length ; apex somewhat rounded ; outer margin strongly convex ; 

 tnjier margin considerably longer than the outer margin, nearly straight, 

 slightly concave in the middle ; costal nervure ending opposite the apex 

 of the discoidal cell; subcostal nervules very long owing to the highly 

 arched costa, arising progressively from the base of the wing at de- 

 creasing distances apart; discoidal cell broad, short, extending to a 

 little beyond the middle of the wing ; upper disco-cellular nervule long, 

 straight, slightly outwardly oblique ; middle and loioer disco-cellulars 

 of equal length, a little longer than the upper, directed inwardly slightly 

 obliquely, the middle concave, the lower straight ; lower discoidal ner- 

 vule lying midway between the upper discoidal and third median ner- 

 vules ; second median nervule arising well before the lower end of the 

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

 of the wing ; submedian nervure nearly straight. Hindwing, entire, 

 oval ; costa arched ; outer margin evenly rounded to the anal angle ; 

 abdominal margin short, nearly straight ; costal nervure short ; first sub' 

 costal nervule arising a short distance before the apex of the cell ; 

 discoidal cell short, less than half the length of the wing ; disco- celhdar 

 nervules concave, placed slightly outwardly obliquely ; discoidal nervule 

 absent ; second median nervule arising very close to the lower end of 

 the cell ; first median arising nearer the lower end of the cell than the 

 base of the wing ; sicbmedian and internal nervures straight, the latter 

 rather short. Antenna short, less than half the length of the costa of 

 the forewing ; club rather slender, long, straight, ending regularly and 

 evenly in a point. Palpi rather thinly and laxly clothed with hairs, 

 porrected forwards in front of the face ; third joint rather long, hairy. 

 Thorax weak, small. Abdomen very slender, long, extending beyond 

 the anal angle of the hindwing. Male with no secondary sexual charac- 

 ters. Female differs from the male only in its broader and moro 

 rounded wings. Legs. Foreleg with an epiphysis on the tibia. Hind- 

 leg with two pairs of spines on the tibia. Type, 0. subvittatics, Moore. 



Ochus apparently finds its place amongst the final genera of Lieut. 

 E. Y. Watson's subfamily Pamphilince, Section A (Proc. Zool. Soc. 

 Lond., ' 1893, p. 72), which coutaius the genera Argoptcroii, Watson, 



