pactly clothed beneath with fine hairs ; antennge somewhat slender, with a gradually 

 thickened blunt-tip club. 



Type. — D. Verhnell [Doubledayi]. 



DERCAS WALLICHII. 



Plate 561, fig. 1, la, b <?, Ic, d ?. 



Gonepteryx Wallichii, Doubleday, Proc. Ent. Soc. v. p. 47 $ (1848). 



Rliodocera Wallichii, Butler, Proc. Zool. Soc. 1866, 452. 



Dercas Wallichii, Wallace, Trans. Ent. Soc. 1857, p. 398. Ehves, Proc. Zool. Soc. 1882, p. 402 ; id. 



Tr. Ent. Soc. 1888, p. 415. Leech, Butt, of China, &c. p. 446 (1893). de Niceville, Sikkim 



Gaz. 1894, p. 167 ; id. Ann. Nat. Hist. 1898, p. 482. 

 Gonepteryx Urania, Butler, Proc. Zool. Soc. 1865, p. 458, p'. 26, fig. 5 ? . 

 Bercas Urania, Swinhoe, Tr. Ent. Soc. 1893, p. 308. 



Male. Upperside sulphur-yellow. Forewlnrj with a small black somewhat 

 quadrate apical patch, reaching to the upper radial, below which it marginally 

 extends narrowly and siouously to beneath the upper median veinlet, and followed 

 by a very small spot on the middle median and then a dot on the lower median ; 

 anteriorly the patch is slenderly continued sinuously and interrupted along the costa 

 to tip of the costal vein ; a large black rounded discal spot placed somewhat 

 inwardly-oblique between the upper and middle medians, this spot being more or less 

 indistinctly and narrowly bordered posteriorly by ferruginous, a few similar coloured 

 scales also forming a short obsolescent fascia below it. Eindwing with a minute black 

 dot at end of the veins. Underside somewhat paler yellow than above. Both wings 

 basally sprinkled with a few ferruginous dots, and a small bilobed, or geminate ferru- 

 ginous discocellular mark, bipupilled with glossy-white. Foreiuing with the apical 

 and marginal markings more restricted, ferruginous, the apical patch centred with a 

 glossy-white streak ; the discal rounded spot dark ferruginous, inwardly bordered 

 with blackish scales, its centre being paler ferruginous; a narrow ill-defined 

 ferruginous-scaled oblique discal sinuous fascia extends from the apical patch to the 

 discal spot and then below it to near the submedian vein. Eindwing with, a basal 

 ferruginous spot centred with glossy- white; a transverse discal ill-defined narrow 

 ferruginous sinuated fascia, which is bent inward at the middle median, each portion 

 of which between the veins being marked inwardly by a dark lunate dot; a similar 

 marked ferruginous spot is also present in the costal interspace above end of the 

 cell, and one also basally between the lower median and submedian ; veins with a 

 black dot at their tip. 



Female. Upperside much paler, somewhat whitish basally. Forewing with 

 black markings, similar to the male, except that the outer band is more restricted, 

 deeply sinuate below the apex, and more macular posteriorly, the discal spot is also 



