ON NEW AND LITTLE-KNOWN BUTTERFLIES 389 



cinereous. Hindwing immaculate. Cilia anteriorly cinereous, poste- 

 riorly orange. Underside, both wings paler and duller than above, 

 the markings similar. Eyes crimson. Antennce black, the club be- 

 neath whitish. Head, body, and legs concolorous with the wings. 

 Female. Exactly as in the male except that the wings are broader, 

 and it has no " male-mark." 



On the upperside this species strongly reminds one of Zea mytheca, 

 Hewitson,* but differs in two particulars. In that species the spot in 

 the cell of the forewing lies against the subcostal instead of the median 

 nervure, and the subapical spot is wanting ; this latter feature is 

 also found in specimens from Sumatra. The underside of the hindwing 

 of the two species is totally dissimilar ; Z. mytheca has a broad discal 

 silvery-white fascia from the costa to the submedian fold, which is not 

 found in Z. zeus. 



Described from a single example (the type) taken in June, 1891, 

 by Mr. W. Doherty, in the island of Pulo Laut, Borneo, and kindly 

 given to me by Mr. H. J. Elwes. Subsequently Dr. L. Martin 

 obtained two males in May from the Battak Mountains and Selesseh, 

 and I a single female, all from N.-E. Sumatra. 



Genus ZAMPA, nov. 



Male. Forewing, costa nearly straight, a little arched only at the 

 base and apex ; apex acute ; outer margin slightly convex only ; inner 

 angle somewhat rounded ; inner margin strongly bowed outwardly 

 in the middle, a little shorter than the outer margin ; costal nervure 

 barely reaching to the apex of the discoidal cell ; subcostal nervules 

 arising at nearly equal distances apart, arising slightly nearer the one 

 to the other progressively from the base of the wing ; discoidal cell 

 narrow, reaching to beyond the middle of the wing ; upper disco- 

 cellular nervule short, straight, strongly outwardly oblique ; middle 

 disco-cellular nearly upright, a little inwardly oblique only, posteriorly 

 strongly concave ; lower disco-cellular quite straight, strongly inwardly 

 oblique, shorter than the middle disco-cellular ; second median nervule 

 arising well before the lower end of the cell ; first median arising at 

 about midway between the base of the wing and the lower end of the 

 cell ; submedian nervure straight. Hindwing, longer than broad ; costa 

 * Distant, Rhop. Malay,, p. 377, n. 1, pi, xxxv, fig, 7, female (1886). 



