1897.] Indo- and Austro -Malay an Regions* 569 



the normal hyaline markings present and large, in P. xenocles they 

 are smaller, and those in the discoidal cell and the four rounded spots 

 immediately beyond it are sometimes nearly obliterated, though in 

 some specimens they are all, or nearly all, fully developed ; moreover 

 in P. xenocles the ground-colour is browner, less fuscous, than in 

 P. phrontis, and usually has a bluish tint or gloss which it never has in 

 the latter. Hindwing differs in having the ground-colour of a more 

 castaneous, less fuscous, colour, the anal chrome-yellow spot about four 

 times as large, with all the hyaline markings more extensive, the one 

 in the discoidal cell usually entire instead of being prominently divided 

 into two markings. Underside, both wings have the ground-colour 

 paler, and the hyaline markings larger, and all more fully developed, 

 instead of being more or less obliterated as they are in P. xenocles. 

 Hindwing has the anal chrome-yellow spot many times larger. 



Mr. Rothschild in Nov. Zool., vol. ii, p. 458, n. 203 (1895) notes 

 that " If the Assam [and Burma] females are all of the dark colour, and 

 the Sikkim and Bhutan females of the light colour, P. xenocles must be 

 divided into two local races, of which the Assamese [and Burmese] one 

 would be typical." I possess three females from Sikkim of P. phrontis, 

 and eight females from the Khasi Hills and Tenasserim of P. xenocles, 

 all of which appear to be quite constant to their respective regions, 

 so that I am of opinion that they represent two distinct species or 

 local races, rather than that the females are dimorphic, of which 

 latter view of the facts there appears to be no evidence, though Mr. 

 Rothschild says that the female of P. xenocles " is dimorphic." 



Family HESPERIIDJE. 



24. Odina ortygia, de Niceville, Plate II, Fig. 15, <f . 

 O. ortygia, de Niceville, Journ. A. S. B., vol. lxir, pt. 2, p. 531 (1896). 



Habitat : Daunat Range, Tenasserim, Burma. 



Expanse : tf, 1*45 inches. 



Description : Male. Upperside, both wings rich orange with black 

 markings. Foreiving with most of the veins outlined in black ; the 

 costa narrowly black, the apex widely black, the outer margin narrowly 

 black; the inner margin still more narrowly black; the rest of the 

 wing broken up by narrow black lines into spots of the ground-colour 

 of various sizes and shapes. Hindwing with the costal, outer and 

 abdominal margins all narrowly black, the rest of the surface broken 

 up into irregular tessellations by intervening black lines. Underside, 

 both wings marked precisely as on the upperside. Antennse black, the 

 club (all except the whip-like point) almost entirely shining white 

 beneath. Palpi black above, orange beneath. Head orange, but with a 



