27. Craseomys shanseius, Thomas. 
28. 
3 27, 29, 36, 39, 2? 41. Chiao-ch’éng Shan, go miles west of T’ai-yiian 
Fu, Shansi. Alt. 8000 to 9200 ft. October 9th to 13th, 1908. 
All trapped amongst moss-grown rocks in or near dense spruce or 
larch woods. Specimen No. 41 was caught on the summit of Mo-érh 
Shan, the highest peak in the district (g200 ft.) Common in moun- 
tainous and well-wooded districts; but not found elsewhere. These 
specimens form a topotypical series, the first known specimens having 
come from this same district. Also recorded from mountains near K’é-lan 
Chou and from those near Ning-wu Fu, further north in the same province. 
This vole feeds upon leaves of young plants growing amongst the 
rocks, underneath which its burrows ramify. It can easily be tempted 
into traps with a little grain or millet. 
Myospalax cansus, Lyon. (Plate 48). 
$ 35. Chiao-ch’éng Shan, mountains go miles west of T’ai-yiian Fu, 
Shansi. Alt. 7000 ft. October 12th, 1908. 
$ 115, 117, 2 gg, 100, 102, 116. Yii-lin Fu, Shensi. Alt. 3000 ft. 
November 17th to 2tst, 1908. 
3 143. Yen-an Fu, Shensi. Alt. 2800 ft. January 2nd, 1gog. 
$ 201, 202, 209, 214, 215, 216, 217, 218, 2 203. 15 miles north of 
Ching-ning Chou, Kansu. Alt. 6200 ft. July 26th and 27th, rgog. 
Specimen No. 35, an adult male, is the only one of this species 
recorded from Shansi. In some ways this specimen differs from those 
secured from Shensi and Kansu. The skull is heavier throughout, with 
more pronounced ridges. It is not considered advisable to separate it 
from M. cansus, which it most resembles, especially as there is only the 
one specimen from this locality. The Shensi and Kansu specimens are 
identical and cannot be separated. 
With these facts in view it would seem that the two species, M. cansus 
and M. fontanierii, overlap each other in their distribution. A specimen 
of M. fontanierit was secured in the Southern Ordos, at a point lying almost 
exactly between Yii-lin Fu, in Shensi, and Ching-ning Chou, in Kansu, at 
or near both of which places M. cansus has been secured. 
At the same time, here is a specimen of M. cansus which has 
encroached upon the acknowledged habitat of M. fontanierii in Shansi. 
More material is needed before this and other points can be cleared up. 
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