MAMMALS FROM WESTKRX OfllXA. 135 



18. EriMYS UUMILIATUS M.-E(1\V. 



2 . 2701. 21 miles E. of Cliao-tung-fu, N. Yunnan. 5800'. 



This is an interesting animal as being a wild species closely 

 allied to the ubiquitous pest, E. norveAjlcns, from which it chiefly 

 differs by its smaller size. The flesh-measurements of Mr. An- 

 dei-son's specimens are as follows:- Head and body 160 )nm. ; 

 tail 130; hind foot 29; ear 17. 



Milne-Edwanls's Mas pliinihens appears to be the young of the 

 same form, and it is also probable that his J/. oimiKj-Uiomm is not 

 distinguishable from it. 



19. EriMYS CONFUCIANUS M.-Edw. 



d' . 2568, 2569 (young). Chin-fu-SMn, near Xnn-chwan. S.E. 

 Sze-chvvan. 4000' (September). 



S . 2583. 2 ■ 2584 (young). ll\va-yin-s!>n, 50 miles N.E. of 

 Chung-king. 4000' (October). 



S. 2594, 2600, 2602, 2603, 2641, 2643, 2658. $. 2599, 

 2659. Wei-choe, on Si-ho R., W. Sze-chwan. 5900'-7000' 

 (November-December). 



d . 2682. 21 miles E. of Chao-tung-fu, Yunnan (March). 



The September and October specimens are distinctly spinous, 

 the others quite soft-fiured. 



20. ApODEMUS CIIEVRIEIU M.-Edw. 



c?. 2595, 2596, 2608. Wei-choe, Si-ho R., W. Sze-chwan. 

 5900'-7000'. 



cf. 2680, 2681, 2682, 2683, 2688, 2689, 2691. ?. 2686, 

 2687, 2690. 30 miles S.E. of Ning-yuen-fu, S. Sze-chwan. 4500'. 

 J. 2716, 2722. $. 2712, 2713, 2717, 2723, 2724, 2727. 

 Chao-tung-fu, N. Y^unnan. 6400'. 



A. agrarius group. Tail and ears comparatively short. 

 M'^ without antero-external secondary cusp, M' with only two 

 internal projections. 



On finding both this species and the next in considerable 

 numbers in the Sze-chwan collection, I have thought it advisable 

 to verify the determination of Milne-Edwards's Mns chevrieri, 

 which, thanks to the kindness of Prof. Trouessart, I have now 

 been able to do. 



To my great regret I find that my suspicions about the 

 determination were justified, and that, instead of being the 

 common and widely spread species allied to A. speciosus, as has 

 been supposed, chevrieri is the rarer shorter-tailed form only 

 recently sent us by Messrs. Anderson and Fergusson, the mouse I 

 described as A.fergussoni being the same species, though perhaps 

 subspecifically separable. 



Fortunately, like as the two species are externally, the determi- 

 nation of specimens is easy enough by the dental characters 

 given above, characters which show clearly in Milne-Edwards's 

 type, although the teeth ai'e wuiu down. 



