some new Forms of Ochotona. 189 
better with O. macrot/s than with the present form, And 
Blanford seems himself to have at first taken for auritus a 
specimen which he afterwards found to have eome from the 
type-locality of Giinther’s species. As a consequence, auritus 
should be considered as a synonym of macrotis, which is 
certainly found in the part of Ladak immediately north of 
the Pang-Kong Lake. 
Ochotona curzonie setana, subsp. n 
A representative of ewrzonie in Seistan. 
General characters very like those of true curzonte. General 
body-colour rather greyer, practically without any brownish 
suffusion. Under surface washed with pale buffy. Tip of 
muzzle and of chin black, as in melanostoma, this being little 
perceptible in curzonte. Light area behind ears smaller and 
less conspicuous than in either curzonic or melanostoma, 
Skull in most respects quite like that of ewrzoniw, but the 
supraorbital ridges, as in melanostoma, are less developed, 
hardly perceptible as ridges, and not overhanging the orbit. 
Incisors slightly more proodont 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 less 
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 41; condylo-incisive length 38°7 ; 
zygomatic breadth 21 ; eee 12°7 ; interorbital breadth Al; 
breadth across brain-case 15°8 ; palatal foramina 11°5 ; an. 
tero-posterior length of bulla 10°6 ; upper tooth-series 8, 
Hab. Seistan. 
Type. Adult female, skinned out of spirit on arrival. 
B.M. no. 6. 1.2.12. Indian Museum no. 7983. Collected 
by the Seistan Boundary Commission of 1905. Presented by 
ie Indian Museum, Calcutta. 
The peculiarity of the occurrence of a species so like 
O. curzonie 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 
eurzoniee only occurs in Sikkim and Tibet, Tingri 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 that oue would have expected in Seistan, 
QO. rufescens, this Pika is readily distinguishable externally 
