MAMMALS FROM WESTKEX CHIXA. 179 



T}ipe. Old male. B.M. Xo. 9.1.1.216. Original number 1800. 

 Collected 30 April, 1908. 



Dr, Allen's " Mijotalpa ''" rufescens * woiild seem also to have 

 the small teeth of ti-ue M. cansus, and is* geographically closer t(i 

 the latter. 



42. Rhizomys vestitus M.-Edw. 



$. 2559. Omi-s:m. 9500'. 



The relationship of this form to Gray's li. sinensis has not 

 hitherto been satisfactorily defined. It seems, however, to be 

 readily characterized by the much larger size of the skull, the 

 great development of the cranial crests, the length and softness of 

 the fur, and the shortness of the tail. li. sinensis probably came 

 from somewhere in South China, perhaps the neighbourhood of 

 Canton. 



K tliird Chinese species may be described as follows:- — 

 Hhizomys davidi. 



Thos. Abstr. P. Z. S. 1911, p.. 5 (Feb. 14).- 



Colour and character of fur, and length of tail, about as in 

 R. vestif/us ; but size much smaller, neaidy as in JR.- sinensis. 



Skull slightly larger than that of R.-sinensis, the male R. sinensis 

 about equaling the female R. davidi. Crests I'ather more 

 strongly developed, comparing like sex with like. Xasals more 

 nariowed behind and premaxillary processes proportionately 

 broader, so that, while in R: sinensis the combined breadth behind 

 of the two nasals about equals either fronto-premaxiilary suture, 

 in R. davidi the length of each suture is about twice the distance 

 that separates their nearest points in the middle line.- Bullae 

 largei'. 



Dimensions of the type, measured in skin :■ — 



Head and body (c.) 350 mm. ; tail 69 ; hind foot (wet) 42 ; ear' 

 (wet) 15. ' 



Skull : condylo-basal length 66 ; upper length fi^om lambda to 

 tip of nasals 53-5 ; greatest breadth 49*5 ; nasals 23*2 x 8'4 ; 

 fronto-premaxiilary suture 6'5 ; interoi'bital breadth 9*2 ; greatest 

 occipital breadth 30; palatilar length 35 ; diastema 20 ; upper 

 molar series (crowns) 13'3. 



An old male skull measures 49 mm. in upper length. 



JTab. Kuatun, N.W. Fokien. 3500'. 



Ti/pe. Old female. B.M. No. 96.12.1.6. Original number 9. 

 Collected December 1898, and presented by J. de La Touche, Esq.- 



Eleven specimens exaniined. 



This fine species, of which the Museum possesses a good series,- 

 presented by Messrs. F. W, Styan, J. de La Touche, and C. B. 

 Rickett, is distinguishable from R. sinensis by its soft fur, shoiter 

 tail, and the above-mentioned cranial characters. From R. restitag, 

 again, by its very much smaller size. 



* Bull. Am. Mus. N. 11, x.vvi. p. 429, 1909. 



