312 JO URNAL, BOMB A Y NA TURAL HISTOR Y SOCIETY, Vol. IX. 



in the first median interspace still larger, the other four small, the 

 anteriormost spot ochreous ; an anteciliary black thread. Cilia white. 

 Body above fuscous, beneath whitish. 



The female of this species has not hitherto been described. I 

 possess a single example taken at Bekantschan at the foot of the 

 Battak Mountains in N.-E. Sumatra by Dr. L. Martin in July, and 

 two males taken at Selesseh also in N.-E. Sumatra in May and August, 

 as well as a very worn specimen from Borneo and one from Perak. 

 The description above would apply almost word for word to the same 

 sex of C. merguia, Doherty ; the best character I can find to separate 

 them is the colour of the ground on the underside, C. tora having it of 

 a purer white. The disco-cellular nervules of the hindwing below 

 are not defined on both sides by a fine ochreous line in C. tora as 

 they are in C. merguia. 



Genus MANTO, nov. 



Male. Forewtng, costa regularly but slightly arched; apex 

 rather rounded ; outer margin nearly straight ; inner angle rounded ; 

 inner margin greatly bowed outwardly in the middle ; costal nervure 

 ending opposite to the apex of the discoidal cell ; first subcostal nervule 

 arising nearer the apex of the cell than the base of the wing, slightly 

 bowed forwards near its base, but well separated from the costal nervure ; 

 second subcostal arising much nearer to the first than to the upper 

 disco-cellular ; third subcostal arising nearer to the apex of the wing 

 than to the apex of the cell ; subcostal nervure terminating at the apex 

 of the wing ; upper disco-cellular nervule* stout, rather long, strongly 

 outwardly oblique ; middle disco-cellular straight, upright ; lower 

 disco-cellular also straight, upright, not quite twice as long as the 

 middle disco-cellular ; second median nervule arising well before the 

 lower end of the cell (the distance between the origins of the third 

 and second median nervules about equals or is a little less than the 

 length of the middle disco-cellular nervule) ; first median arises about 

 twice as far from the second as the second does from the third ; 

 submedian nervure sinuous, strongly bowed posteriorly at its middle. 

 Hindwing, costa greatly arched throughout its length ; apex well 

 rounded ; outer margin at first straight and even in the type 

 species, very convex in M. martina^ Hewitson, angled at the terrnina- 



* There is actually no upper disco-cellular nervule, what passes as such being the 

 true basal portion of the upper discoidal nervule. 



