SINO-MONGOLIAN FRONTIER 
size as M. mandarinus, but with a very much 
smaller skull. The skull is narrower than in 
either M. johannes or M. pullus, but not 
nearly so narrow as in M. angustus. Of a 
lighter colour than M. angustus, it has a 
larger hind foot, though in other body 
measurements the two are very similar. 
While M. angustus seems to keep away from 
camps and buildings, our present species is 
essentially a camp follower, as we were un- 
able to trap them anywhere except immedi- 
ately round the house and tents. Unlike M. 
angustus this vole is nocturnal in its habits, 
usually being trapped during the night. 
This interesting species was found to be 
new and was named by Miller after Mr. War- 
rington, who first discovered it.1 
83. Craseomys shanseius, Thos. 
Seven specimens, 3 gg, 4 99. Mountains 
50 miles N.W. of T’ai-yiian Fu, Shansi. 
5,500 ft. 
Three specimens, 1 g, 2 29. Mountains 80 
miles W. of K’uei-hua-ch’éng, N. Shansi. 
7,000 ft. 
This vole, which usually occurs in the 
forested areas of the Shansi mountains, was 
first described by Mr. Thomas from speci- 
mens taken in the Chiao-ch’éng Shan, west of 
1 Smithsonian Miscellaneous Collections, Vol. 60, No. 28. 
201 
