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



both wings pale reddish-brown, outwardly becoming whitish ; the 

 disco-cellular nervules marked with a dark brown line, a dark brown 

 discal line, and an obscure submarginal fascia. Forewing has the 

 discal line gently outwardly curved, formed of outwardly-curved 

 lunules, each lunule crossing an interspace, the line commences 

 on the subcostal nervure just within the point where the third 

 subcostal nervule originates, and ends on the submedian nervure ; 

 the inner margin up to the submedian fold white. Hindwing with 

 the discal line throughout its length highly irregular, posteriorly 

 it is zigzagged and recurved to the abdominal margin ; a minute 

 black spot surrounded by a narrow ferruginous ring in the first 

 median interspace ; between this spot and the outer margin and the 

 next two interspaces towards the anal angle black thickly sprinkled 

 over with white scales ; the anal lobe bears a small round deep black 

 spot, crowned with ferruginous. Body above very pilose, pale blue ; 

 beneath ochreous. Female. Upperside, both wings pale blue, of a 

 lighter and duller shade than in the male, with no iridescence. Fore- 

 wing with the blue coloration of greater extent than in the male owing 

 to the absence of the " male-mark." Hindwing has the outer black 

 margin reduced owing to the greater extent of the blue ground-colour; 

 the black anteciliary thread inwardly defined by an equally fine white 

 thread. Otherwise as in the male. 



0. osta is near to 0. ogyges, de Niceville, but differs in many 

 important particulars. The coloration of the upperside is different, 

 it is not iridescent, and is never emerald-green in any light ; in the 

 forewing there is less blue on the inner margin, the black area on 

 the outer margin being broader, and there is more blue in the 

 discoidal cell ; the " male-mark " is less prominent. On the hindwing 

 the outer margin is more broadly black, in 0. ogyges it bears a black 

 anteciliary thread only. On the underside the ground-colour of both 

 wings is redder, the disco-cellular nervules are marked with a dark 

 line, the discal line is more irregular, and is further removed from the 

 outer margin. It appears to be allied to ' e Myrina " deudorix, Hewit- 

 son,* from Mindanao in the Philippines (Hewitson and Semper), but 



* 111. Diurn. Lep., Lyccenidw, p. Supplement 2, n. 43, pi. Supplement ii, figs. 64, 65, 

 male (1869). 



