On neio Itodenta from Sze-chican, 727 



LXXXII. — 2\ew lioJents from Sze-cJnoan collected hy 

 Capt. F. M. Bailey. By Olufield Thomas. 



(Published by permission of the Trustees of tlie British Museum.) 



The Britisli Museum owes to the kindness of Caj)t. F. M. 

 Bailey a number of small mammals obtained by him in 

 Western Sze-chwan, dining a recent shooting-trip to that 

 rich and little-known country. 



Besides examples of Mustela sihirica, Sciurns casianeo- 

 ventris, Dremomys peniyi, and Marmota rohnsta, the col- 

 lection contains examples of the fullowing new forms. 



Myospalax bailey i, sp. n. 



Allied to M. cansus, but tail shorter, feet hairy, and ni' 

 different. 



tSize about as in M. cansus. Colour grey, with scarcely 

 any drabby tinge, the tone therefore markedly greyer than 

 in the allied species. Under surface slaty^ washed with very 

 pale drab. Head darkened on crown, a small whitish nose- 

 patch. Hands and feet white, closely l.'airy to the bases of 

 the claws, the latter proportionally large. Tail unusually 

 short, little longer than the hind foot, white throughout. 



^kuU essentiall}' like that of AI. ca7isus, with some slight 

 differences. Nasals surpassing the premaxillai posteriorly. 

 Crown with the limiting lines of the masseteric fossa3 ap- 

 ])roaching each other more closely posteriorly than at the 

 fronto-parietal suture, the reverse being nearly always the 

 case in J7. ca7isus. Occiput with a median crest. 



Teeth as in M. cansus, exee[)t that the postero-external 

 lobe of m^ is larger and has a fairly deep re-entrant angle 

 between two projecting angles on its outer side, and a shallow 

 re-entrant angle on its inner side ; as a consequence, there 

 are two re-entrant angles on the inner side of the tooth, and 

 three on the outer, where also there are four salient angles. 

 Below, the anterior lobe of m^ is rather more developed, and 

 there are three re-entrant angles on its inner side. 



Dimensions of tlie type : — 



Head and body 173 mm. ; tail 33 ; hind foot 26. 



Skull : greatest length 48; condylc-ineisive length 39*6 ; 

 zygomatic breadth 29 ; nasals 17'7 ; interorbital breadth 8'3 ; 

 breadth on transverse crest 28*5 ; palatilar length 20*3 ; 

 palatal foramina Q'Q ; upper molar series (crowns) 9*5 ; 

 (alveoli) 9-8. 



