Mammals from Central and Western Asia. 759 



This species forms with S. viacropi/gnueus and annexus a 

 group of shrews with the essential cliaracters of S. minutusy 

 but equalling S. araneus in size. It may be distinguished 

 iVom its two allies by the proportionally greater size of 

 the posterior unicuspids and its longer muzzle ; it is also 

 slightly larger than either of them, as gauged by its cranial 

 dimensions. 



Microtiis agrestis mongol, subsp. n. 



Like the European M. agrestis, but with much larger 

 bullae. 



External characters as in agrestis, the colour slightly paler 

 than in Norwegian specimens of that animal. Under surface 

 "washed with dull butfy greyish. 



Skull apparently similar in all respects to that of true 

 agrestis, except tJjat the bullje are decidedly larger, more 

 fully inflated, closer together mesially, and standing up 

 liigher above the basis of the skull. Teeth quite as iu 

 agrestis, the extra prism on ?n" well developed. 



Dimensions of the type (measured in fltsh) : — 



Head and body 98 mm. ; tail 32; hind foot (s. u.) 18 ; 

 ear 12. 



Skull: condylo-incisive length 26; basilar length 23'2 ; 

 zygomatic breadth 14*5 ; nasals 7*2 ; interorbital breadth 

 3*7 ; palatal ibramina 4'7 ; length of bulla 8 ; upper molar 

 series (crowns) 5"8. 



Bab. Keratchik Valley, Tannu-ola Mts., N.W. Mongolia. 

 Alt. 4200'. 



Ti/pe. Adult male. Original number 188. Collected 

 4th August, 1910. 



Considering its locality, this animal is surprisingly like 

 the true M. agrestis of Scandinavia, differing, so far as I am 

 able to see, only by its larger buUte. No Asiatic vole allied 

 to it and possessing five prisms on nr has been described. 



Evotomys glareolus saianicus, subsp. n. 



cJ . 158 ; ? . 163. Syansk Mts., 100 miles W. of Lake 

 Baikal. 1600'. 



(?) ? (young). 172. Syansk Mts., 100 miles W. of 

 Lake Baikal. 1600'. 



Size rather small. Colour very much as in the dark races 

 of E. glareolus, E. g. hritannicits, and suecicus. The rufous 

 area of the back, however, is narrower, so that the grey of the 

 sides shows more in the u})per aspect ; the head also is greyer 

 and less rufous. Sides and under surface dark grey in the 



