268 MR. H. J. ELWES ON BUTTERFLIES FROM [Apr, 21, 



ocelli occurs in Sikkim and when it would have been expected also 

 in Burmah. 



This last form has no trace of a sexual patch or of transverse 

 bands on the underside, and might be considered a form of Y. sakra 

 as it was by Doherty, who wrote T. nikcBU on the paper, this 

 name being considered both by de Niceville and myself as little 

 more than a synonym of Y. sakra. 



It would appear from these specimens that although in Sikkim, 

 whence we have much larger series taken at all seasons, Ypthuna 

 sakra, methora, and philomela are distinguished by fairly good 

 characters, in East Pegu the same characters do not hold good ; 

 and that neither the sexual patch nor the striation or bands of the 

 underside can be relied on to separate or name them. I hope, how- 

 ever, that by pointing out the difficulties which arise, collectors in 

 different parts of Burmah may be led to take particular notice of 

 the species of Yjdhima, and if possible clear up the confusion which 

 at present exists among them. 



Ypthima sakra. 



Yphthima sakra, Moore, Cat. E. I. C. i. p. 236 ; Butt. Ind. i. 

 p. 232, t. xvii. 67 d" • 



Specimens of this, which agree well with those from Sikkim and the 

 Khasias, were sent from the Naga Hills as well as from Bernardmyo. 



Ypthima pandocus. 



Y. pandocus, Moore, Cat. E. I. C. i. p. 235 ; Butt. Ind. i. p. 223. 

 Y. corticaria, Butl. Trans. Linn. Soc, 2nd ser. Zool. i. p. 537 

 (1879). 



Common at Perak in January and February. 



Ypthima narasingha. (Plate XXVII. fig. 2, $ .) 



Y. narasingha, Moore, Cat. E. I. C. i. p. 236 ; Butt. Ind. i. 

 p. 225, 



Taken by Doherty at Bernardmyo in May. 



The female, which is undescribed, differs from the male iu being 

 larger, of a greyer tint above, and a more greenish shade on the 

 underside. The striation of the underside is less marked than in 

 Hewitson's type specimen. 



I doubt the occurrence of this species in Sikkim, where it has never 

 been found by any recent collector, and believe that this is the first 

 time that it has been found since Hewitson described it. Doherty 

 supposed it to be a new species of Callerehia, to which genus it 

 seems to have as much or more resemblance than to Ypthima. 



Erites medura. 



Hipparchia medura, Horsf. Cat. E. I. C. pt. ii. t. v. figs. 8, 8 a 

 (1829). 



1 Erites angularis, Moore, P. Z. S. 1878, p. 825 ; Butt. Ind. i. 

 p. 236, t. xvi. 50 2 ■ 



Numerous specimens were sent by Doherty from East Pegu, taken 



