ON NEW AND LITTLE-KNOWN BUTTERFLIES. 381 



secondary sexual character on the forewing of the male ; in the middle 

 disco-cellular nervule of that wing being straight throughout its course, 

 in Erionola its posterior portion is strongly outwardly curved ; the 

 second median nervule arises nearer to the lower end of the cell ; and 

 the outer margin of the forewing is more upright, less inwardly 

 oblique, owing to the inner margin being proportionally longer than 

 in Erionota. 



(1) PUDIC1TIA PHOLUS, de Niceville. 



Parnara pholvs, de Nice'ville, Journ. Bomb. Nat. Hist. Soc, vol. iv, p. 172, d. 11, pi, B, 

 fig. 3, female (1889). 



Habitat : Bhutan ; Khasi Hills. 



Genus ACERBAS, nov. 



Male. Forewing, triangular, rather narrow ; costa nearly straight, 

 slightly arched only ; apex somewhat rounded ; outer margin at the 

 apex nearly at right-angles to the costa, afterwards inwardly oblique, 

 straight ; inner margin straight, distinctly longer than the outer 

 margin ; costal nervure ending on the costa before the apex of the 

 discoidal cell ; subcostal nervules counting from the base of the wing 

 arising from the subcostal nervure at decreasing distances apart ; 

 discoidal cell narrow, long, extending to two-thirds the length of the 

 wing from the base ; upper disco-cellular nervule short, strongly 

 outwardly oblique ; middle disco-cellular long, upright, concave ; 

 lower disco-cellular straight, slightly inwardly oblique, slightly shorter 

 than the middle one ; lower discoidal nervule in consequence of the 

 greater length of the middle disco-cellular arising slightly nearer to 

 the third median than to the upper discoidal nervule ; second median 

 nervule arising far before the lower end of the cell ; first median 

 arising near the base of the wing, arising at about the same distance 

 from the base of the wing as the second arises from the lower end 

 of the cell ; submedian nervure slightly curved ; secondary sexual 

 character consists of a large inconspicuous patch of plush-like modified 

 scales in the middle of the wing on the lower surface. Hindwing, 

 much longer than broad ; costa greatly arched at base, gently arched 

 from thence to apex ; apex rounded ; outer margin rounded, very 

 slightly excavated on either side of the termination of the submedian 



