320 JOURNAL, BOMBAY NATURAL HISTORY SOCIETY, Vol. IX. 



iridescence than in R. sphinx, Fabricius. Cilia black. Forewing with 

 the costa up to the subcostal nervure, the apex widely, and the outer 

 margin decreasingly, black ; the veins crossing the blue area also 

 black ; a conspicuous silky shining black " male-mark " on the middle 

 of the disc, placed at the bases of the median interspaces, very slightly 

 extending anteriorly into the discoidal cell, posteriorly into the 

 submedian interspace. Hindwing with the costa and abdominal 

 margin broadly, the outer margin narrowly, black ; the anal lobe 

 centred with a black spot crowned with dull orange ; the tail black 

 with a white tip ; a fine white anteciliary thread extends from the anal 

 lobe to the termination of the second median nervule ; the tuft of 

 hairs attached to the middle of the inner margin and turned under and 

 forwards, black. Underside, both wings dark olive-green ; a pair of 

 fuscous lines closing the discoidal cells ; a discal fuscous band ; 

 a submarginal and marginal dark fascia, both indistinct, especially the 

 outer one. Forewing has the discal band with very even edges, 

 commencing at the costa, ending in a point just before reaching the 

 submedian nervure, outwardly bowed ; the inner margin broadly 

 paler than the rest of the wing. Hindwing has the discal band slightly 

 wider than in the forewing, very straight from the costa to the first 

 median nervule, thence to the abdominal margin zigzag, W-shaped ; 

 this latter portion is finely more or less edged on both sides with 

 very pale greenish-silvery scales ; the round marginal black spot in the 

 first median interspace crowned with dull orange ; the interspace 

 beyond thickly sprinkled with greenish-silvery scales over a black 

 ground ; the black anal lobe crowned first with a line of greenish- 

 silvery scales, then with dull orange ; a fine white anteciliary thread 

 as on the upperside. Head and body above black, abdomen beneath 

 dark ochreous. 



This species is nearly allied to R. tara % de Niceville, from the 

 Himalayas and Khasi Hills ; but the blue coloration of the upperside 

 is quite different, being darker and richer in shade, less iridescent, and 

 in the forewing of greater extent ; the sexual patch is also smaller, barely 

 extending into the submedian interspace, in R. tara it extends some- 

 what widely below the first median nervule ; the ground-colour of 

 the underside is also quite different. It is also near to Rapala elcia^ 

 Hewitson, from East Luzon and Polillo in the Philippine Isles ; but 



