150 LEPIDOPTERA INDICA. 



greyish, glazed ; a discal, outwardly curved series of more or less disconnected dark 

 brown, thin lunular marks. Hindwing with an outwardly curved similar series, rather 

 closer to the margin than is usual (each lunule marked inwardly with white suffusion), 

 turning round to the abdominal margin in a V-shape across the end of the middle white 

 baud, and outwardly lined with white ; a sub-marginal series of pale brown lunules 

 marked with white ; a black sub-terminal spot in the first interspace, capped with 

 orange, a black anal spot ringed with white, the space between them with slaty-blue 

 scales ; terminal line black, with a white inner thread which becomes obsolete upwards. 

 Antennae black, ringed with white, club with a red tip ; frons white, with a grey middle 

 stripe ; eyes ringed with white ; head and body above and below concolorous with 

 the wings. 



Female. Upperside blue, without the azure colour of the male, veins finely black. 

 Forewing with broad costal and outer marginal black bands commencing very narrowly 

 at the base, broadening rapidly at the apex, and narrowing gradually down the outer 

 margin to the hinder angle, where it is as broad as it is on the middle of the costa ; a 

 round pure white spot just outside the end of the cell, its upper side touching the 

 black costal band. Hindwing w^ith the costal space broadly blackish, the band 

 narrowing below the apex and running narrowly and somewhat diffusedly down the 

 outer margin ; abdominal fold greyish-white. Underside exactly as in the male. 



Expanse of wings, $ 1 jq- to 1^-^, $ 1-^ to lyg inches. 



Dry-season Brood (Figs. Ic, $, Id, $). 



Male and Female. Upperside paler than the other form, the black marginal bands 

 narrower ; in the male the band is much narrower, rapidly narrowing hindward on the 

 outer margin, continued from the middle to the hinder anojle in a fine black line. 

 Underside similar to the underside of the Wet-season form. 



Expanse of wings, $ $ l-j*^ to ly^^- inches. 



Habitat. — Assam. 



A common form in the Khasia Hills ; we have received many males and several 

 females, the female above and below much resembles the female of Pratapa cotys, 

 Hewitson, but the white medial band on the underside in that species is much broader. 



INDO-MALAYAN ALLIED SPECIES. 



Arrhenotlirix lowii, H. H. Druce, Proc. Zool. Soc. 1895, p. 596, pi. 33, fig. 2, $ . Habitat, Labuan, 

 Borneo. 



