some neio Forms o/Ochotona. IbO 



Ix'tter witli iK viacrofis than with (h(^ ))re.set)t lorrii. Aixl 

 Bhiiiloiil seems himself to have at first taken for auritus a 

 specimen which ho ulfervvanls touiul to have come from tlie 

 type-localily of Ciiinthei's species. As a consequence, auritus 

 •shonhl be considered as a synonym of viacrolis, which is 

 certaiidy found in the part of Ladak immediately north of 

 the Pang-Kong Lake. 



Ochotona curzonke sei'ana, subsp. n. 



A representative of eurzonice in Seistan. 



General characters very like those of true cttr^ow/fc. General 

 body-colour rather greyer, practically witliout any brownish 

 suffusion. Under surface wusiied with pale buffy. Ti|) of 

 muzzle and of chin black, as in vielanostoma, this being little 

 perceptible in curzonice. Light area behind oars smaller and 

 less conspicuous than in either curzonice or vielanostoma. 



Skull m most respects quite like that of curzonice, but the 

 supraorbital ridges, as in melanostoina, are less developed, 

 hardly perceptible as ridges, and not overhanging the orbit. 

 Licisors slightly more proodonfc than in either of the allied 

 forms, but with the same strongly projecting inner flange, in 

 this respect contrasting with rufescens, which is also far lesi 

 proodont than any of the present group. 



Dimensions of the type (measured on the spirit-specimen 

 before skinning) : — 



Head and body 152 mm. ; hind foot 29; ear 19. 



Skull : median length il ; coudylo-incisive length 38*7 ; 

 zygomatic breadth 21 ; nasals 12'7 ; interorbital breadth 4-1 ; 

 breadth across brain-case lb'6 ; i)alatal foramina 11-5 ; an- 

 tero-posterior length of bulla 10"G ; upper tooth-series 8. 



Uab. Seistan. 



Ti/pe. Adult female, skinned out of spirit on arrival. 

 B.M. no. G. 1. 2. 12. Indian Museum no. 7983. Collected 

 by the Seistan Boundary Commission of 1905. Presented by 

 the Indian Museun), Calcutta. 



The peculiarity of the occurrence of a species so like 

 0. curzonice as this in Seistan was not appreciated at the time 

 of its arrival, owing to the ranges of the Indian Pikas not 

 being then at all worked out. Now we know that true 

 curzonice only occurs in Sikkini and Tibet, 'i'ingri in the 

 latter country being its most western record. Its recurrence 

 far to the west in Seistan is therefore a notable instance of 

 discontinuous distribution. 



From the species tliat one would have expected in Seistan, 

 0. rujcictu;;, tliis Pika is readily distinguishable externally 



