400 Mr. O. Tliomas on 



(J . 284 ; ? . 285, 286, 287, 288 (youn^). Barlik Mts. S., 

 N.W. Dzungaria. 6000'. 



The Altai specimens are ratlier smaller tlian examples 

 from the Thian Shan, with which the Barlik specimens 

 agree. 



Tliere is, however, a puzzling variation in size in the 

 skulls of the members of this group, and much further 

 material will be needed before the species can be satisfactorily 

 distinguished. 



28. Microtis socialis, Pall. 



(^ . 230. Steppe south of Tarbagatai Mts., Dzungaria. 

 20OO'. 



29. Ahicola worthingto7U, Mill. 



? . 258. Bogdo-ola Mts., S.K. Dzungaria. 6000'. 



S'. 315, 316, 317. S. Muzart Valley, Tliian Shan. 

 7000'. 



The Muzart Valley is close to the original locality of the 

 species, the Kok-su Valley, Thian Shan. The Bogdo-ola 

 ]\]ts. are some 500 miles further eastwards in the latter 

 chain. 



All the specimens agree closely with the typical series. 



30. Alticola sp.. Miller. 



S . 327, 328, 330, 331, 332, 333, 334. Karakoram Mts., 

 N. side, Chinese Turkestan. 9000-10,000'. 



Mr. Gerrit Miller has been good enough to examine the 

 specimens of Alticola obtained by Mr. Carruthers on the 

 Karakoram Mts., and finds them to be a distinct species 

 allied to A. alhicauda. No. 333 (B.M. no. 12. 4. 1. 120) is 

 the type. 



31. Lagurus /«^f'?/5, Evcrsm. 



(?. 251 ; ? . 252. E. of Gu-tschen, S.E. Dzungaria. 



The ocjurreuce of this interesting species in Dzungaria 

 gives a striking instatice of the penetration of Kirghiz 

 speciea into Chinese territories through the gap in the 

 mountain-chain just south of the Tarbagatai range. 



It appears to me that the Lagurus group is aujply worthy 

 of sej)arate generic rank, its general characters, lon)ming-Iike 

 a]ipearance, and especially its peculiar m^ making it readily 

 distinguishable froin all other voles. 



