188 | Mr. O. Thomas on 
Other specimens collected by C. A. Crump for Col. A. E. 
Ward from Thirit on the Nubra and Shushal on the Lake. 
Type. Adult male. B.M. no. 7.9.6.17. Original num- 
ber 10. Collected 24th June, 1907, and presented by 
H. Holmes-Tarn, Esq. 
This little species was taken for Blanford’s Lagomys aurttus 
by Bonhote, for the very natural reason that the type-locality 
of that animal was just where it oceurred—on the Pang- Kong 
Lake. But closer study shows that its skull is smaller and 
much narrower than that of O. macrotis, of which I believe 
auritus to be a synonym, and that its palatal foramina are of 
different shape, so that it is evidently a distinct species. 
Specimens of this species are marked by both Holmes-Tarn 
and Crump as occurring in thick jungle or scrub, and there 
may be a difference in the local habitation of the larger 
species found in the same region. . 
Ochotona royle baltina, subsp. n. 
A pale grey subspecies, replacing to the north-west of 
Ladak the Kashmir O. 7. wardi. 
Size and essential characters as in true royle’, a fulvous 
mantle on head and fore back no doubt present in the late 
summer. General colour of back very pale grey, nearest to 
“pale drab-grey” of Ridgway. Crown with indications of a 
fulvous mantle coming later. Nape with the buffy-whitish 
patches well marked. 
Other characters and skull as in O. r. warde. 
Dimensions of the type :— 
Head and body 180 nm. ; hind foot 32; ear 27. 
Skull: upper length 44; condylo-incisive length 40; 
zygomatic breadth 21 ; interorbital breadth 5; breadth of 
brain-case 17°5 ; leneth of bulla 9°8 ; upper tooth-row 8. 
Hab. Baltistan, N.W. of Ladak. ‘Type from Nurh, on 
the Indus, just east of Skardo, 13,000’. Another specimen 
from: Tashgam, 9500’ (C. A. Crump). 
Type. Adult male. B.M. no. 8.7.6. 129. Original num- 
ber 27. Collected 11th June, 1905, by Pearl and presented 
by Col. A. EK. Ward. 
Essentially similar to the Kashmir 0. . wardz, but distin- 
guished by the greater paleness of its general grey colour, 
which is about as in O. macrotis. 
I have had some doubt as to whether this might be 
Blanford’s “ Lagomys auritus,’ whose type-loeality was on 
the Pang-Kong Lake, but all details of his excellent figures 
of the skull, notably the breadth across the brain-case, agree 
