1900.] MAMMALS OE THE " SKEAT EXPEDITIOK." 881 



b. 2 imm. sk. Gunong Inas, about 4000 ft. 



c. Gunong Inas. 



The adult $ is typical and very spiny; the immature specimens, 

 which are about | grown, are much darker, showing hardly any 

 fawn-colour, and, except on the underparts, where the mature 

 pelage has commenced to show itself, are entirely spineless. 



45. Mus mettada (Gray). 



Golunda mettada, Gray, Charlesworth's Mag. Nat. Hist. i. p. 586 

 (1837). 



a. $ in al. Bukit nr. Biserat, Jalor, 12th June, 1899. 



This is, so far as I am aware, quite a new locality for this 

 species, which is, however, a fairly typical specimen. 



46. Bhizomys sematrensis (Baffles). 



Mus sumatrensis, Baffles, Tr. Linn. Soc. xiii. p. 258 (1822). 



a. $ ad sk. Biserat, Jalor, 18th May, 1899. 



b. $ ad sk. Aring, Kelantan, 8th Sept., 1899. 



47. Htsteix yunnanensis Anders. 



Hystrix yunnanensis, Anders. Zool. Bes. p. 332 (1880). 



a. Skull, ad. $ . Biserat. 



b, c. 2 foetuses in al., taken from the above $ . 



d. Imm. in al. 24th Jan., 1900. 



I have compared the skull with other Hystrix skulls in the 

 Museums of Cambridge and London, and, although there did not 

 appear to be a skull of this species among them, I had little difficulty 

 in determining it. 



The characteristic points, which are well brought forward in the 

 original description, are : — 



(i) The posterior border of the nasals being in a line with the 

 posterior edge of the 1st molar. 



(ii) The posterior margin of the premaxillary is anterior to the 

 1st molar. 



(hi) The nearly equal breadth of the nasals throughout their 

 length. 



(iv) The greatest length of the frontals being nearly equal to 

 that of the nasals. 



The measurements of the skull are : — 



Greatest length 131 mm. ; hensehon to lower edge of occipital 

 foramen 113 mm.; zygomatic breadth 68 mm.; length of nasals 53 mm.; 

 greatest length of frontals 57 mm. ; breadth of conjoint nasals at 

 posterior margin of premaxillse 29 mm. ; ditto at tip 22 mm. 



48. Teichi's lipura Giinth. 



Trichys lipura, Giinth. B. Z. S. 1876, p. 739. 



a. $ ad. sk. Ulu Selama, 12th Jan., 1899. 



This specimen, which is young, is of chief interest as confirming 

 the fact that this animal occurs in the Malay region, and con- 

 sequently renders it possible that the species described by Buff on 



