MammnJs from Cent ml Asin. 401 



Anfl, fuitlior, T would separate as a special siihofenua tlio 

 American niemUor:^ of the o;roiip from the Old World ones, 

 on the frround of their rather less lemmin<T-like form, lonfjcr 

 tails, and the possession of onlv four prisms in vir^. This 

 suhjrenus might be called Lemyyu'sciis^\\'\\\\ Larjurus {Lemmis- 

 cus) ctirtafus, 'Cope, as its type, the oth^r known species 

 being L. panpey-rinius, Cooper, and L. pallidns, Merr. 



32. Lagurus Jagiirns altorum, subsp. n. 



? . 271. Barlik Mts., N.W. Dzunearia. 6000'. 17th 

 June, 1911. B.M. no. 12. 4. 1. 123. T>jpe. 



? . 305, 300. Tekes Valley, Tliian Shan. GOOO'. 



Size rather larger and colour greyer than in true lagurus. 



Colour above between smoke-grey and drab-grey, the 

 tliree specimens all much greyer than examples of lagurus 

 from the Lower Voltra and Ural. Below bufly whitish. 

 Dorsal lines well marked. 



Dimensions of the type (measured in flesh) : — 



Head and body 100 nun. ; tail 14 ; hind foot 15 ; ear 5. 



Skull : condylo-basal length 24"2 ; condylo-incisive length 

 24*1 ; zygomatic breadth 14*7 ; nasals, length 6'5 ; inter- 

 orbital breadth 3*1 ; palatilar length 12*7 ; diastema 7*1 

 palatal foramina 13 ; upper molar series (crowns) 6. 



Jfah. & Tfipe as above. 



All the striped lemming-voles of the high lands of Central 

 Asia will probably be found to belong to this gieyish form, 

 the true lagurus being a native of the flat regions westward 

 as far as the Lower Volga. 



33. Lemmus ohensis, Bts. 



c? . 174. Syansk Mts., 100 miles W. of Lake Baikal. 

 2200'. 



34. Ellohius tancrei, Bias. 



S. 216, 217, 218, 220; ?. 219. Chagan Kol Vallev, 

 Great Altai. 7000'. 



S. 224, 225, 226. Kran Valley, Great Altai West. 

 2900'. 



35. Ellohius alhicatus, sp. n. 



c? . 235 ; ? . 236. S.E. Ilami Mts., N.E. Chinese 

 Turkestan. 6000'. 



Like E. tancrei, but the whitening of the sides and belly 

 even more prominent. Skull larger throughout. 



