NEW HIMALAYAN MAMMALS. 931 



slightly darker than tail, same colour as the back. Hands and 

 toes white. 



Skull stoutly made, the brain case much swollen, the sagittal 

 crest not strongly marked, teeth less stout than in alpina. 



Dimensions of the type recorded by the Collector : — 



Head and body 250 ; tail 147 ; hindfoot 46 ; ear 25. 



Skulls — Greatest length 50 ; basilar length 46 ; greatest breadth 

 28 ; post orbital constriction 10 ; brain case breadth 24 length of, 

 carnassial 6 ; bullae 14. 



Habitat. — Western Himalaya (Type from Upper Sutlej, Valley 

 Alt. 14,000). 



Type.— Adult male. B. M. No. 10, 12, 2, 1. Original Number 

 168. Collected 16th September 1910, and presented to the 

 National Collection by Capt. C. H. T. Whitehead. 



At the same time as the weasel, Capt. C. H. T. Whitehead sent 

 3 specimens of a vole which, though closely resembling a species 

 from Lhassa, differs from it in several skull characters and seems 

 to deserve a name at any rate as a distinct Geographical Race. It 

 may be described as follows : — 



Microtus (Phaiomys) waltoni petulans, sub-sp. n. 



A local race closely resembling M. waltoni externally. The 

 latter, however, shows a well marked pale area on the flanks and 

 its feet are distinctly whiter. Size as in waltoni. 



Skull as in waltoni but more lightly built, especially noticeable 

 in the lower jaw. Upper incisors narrower and white-tipped 

 anteriorly ; nasals shorter, extending less far back, broader in front, 

 more abruptly narrowed backwards ; anterior palatal foramina 

 longer; bullae smaller. 



Dimensions of the type, taken in the flesh : — 



Head and body 102 ; tail 33 ; hindfoot 16 ; ear 1 0. 



Skull. — Greatest length 26-5 ; basilar length 23 ; zygomatic 

 breadth 16 ; inter-orbital breadth 4 ; length of nasals 6*5 ; diastema 

 8'5 ; palatilar length 14 ; length of molar series 7. 



Habitat. — Teza, Upper Sutlej Valley. 



Type.— Young male. B. M. No. 10, 12, 2, 27. Original 



