134 . LT.-COL. J. MALCOLM FAWGETT ON [June 7, 



newly-born example of this species, which was naked and blind 

 and scai'cely distinguishable from the young of the Common Rat. 

 In this respect the young differed markedly from those of the 

 Egyptian Spiny Mouse {Acomys), which were born with the eyes 

 open and the skin covei-ed with hair, the brood consisting of but 

 two individuals only. This fact further supported the view that 

 the condition of the young at birth could not be taken as a criteiion 

 of affinity in the case of the Rodentia. 



The following papers were read :- 



1. On some New and Little-known Butterflies^ mainly from 

 high elevations in the N.E. Himalayas. By Lt.-Col. 

 J. Malcolm Fawcett *. 



[Received April 9, 1904.] 



(Plate IX.t) 



[The complete account of the new species descn'hed in this communication 

 appears here, but as the names and preliminary diagnoses were published in the 

 'Abstract,' such species are distinguished by the name being underlined. — Editoe.] 



The main object of this paper is to describe some species which 

 were taken by the native collectors of Mr. J. C. White, British 

 Commissioner in Sikkim, at high elevations in the N'.E. Himalayas, 

 on the borders of Thibet. I have been unable to identify them 

 with any species in the Collection of the British Museum, or in 

 the Rothschild Collection at Tring, and they were subsequently 

 sent to Mr. H. J. Elwes, who is unacquainted with them. 



Under these circumstances it appears to me necessary that 

 they should receive names, although future investigation may 

 perhaps demonstrate some of them to be geographical forms 

 of species already described. It also appears essential that the 

 three species of Colias which have been taken at high elevations 

 on the Sikkim-Thibet Frontier shotild be figured together ; and 

 for this reason a figure and description of C. eogene var. leechi 

 (Gr.-Gr.), of which a figure does not appear to have been hitherto 

 published, have been added to the figures and descriptions of the 

 two new species. 



At the same time that the above-mentioned species were taken, 

 there were also four species of the genus Pariiassius captured on 

 the Sikkim-Thibet Frontier : one is clearly P. imperator (desci-ibed 

 by Herr Friihstorfer as P. itnperator augustus) ; a second is 

 P. epaphus var. sikkimensis Elwes ; and the other two have been 



* Communicated by the Seceetaey. 

 f For explanation of the Plati; see p. 141. 



