88 



on a new mouse-deer from upper siam. 

 By C. Bohen Kloss, f.z s. 



Amongst tlie specimens of mammals which have been sent me 

 fi-oin Siam is an example of a Lesser Mouse-deer which, 1 believe, 

 becomes the most northerly specimen on record. Though it does not 

 notably differ in colour from T. k. affiiiis, Gray, of Cambodia, etc., yet 

 it is so much larger ( head and bodj^ 525 ; hind foot, 125 ; skull, 103 

 mm. against 438 ; 110 ; 89.5 for 7'. k. affiiiis^ } that I consider ii to 

 be a distinct local form allied to that race and have named it in honour 

 of Mr. W. J. F. Williamson. 



In size the animal most closely agrees witli the strikinglj-- 

 coloured Tracjulus versicolor, from Nhatrang, S. Annam 2 , but where* 

 as that is regarded as a member of the Greater Malayan Mouse-deer (or 

 javanicus) group, the present individual unquestionably belongs to the 

 finer-haired Lesser Mouse-deer (or hancliil) section. 



Tragulus kanchil williamsoui, subsp. nov. 



Tijpe (and oiilj' specimen examined). Adult female (skin and 

 skull) with worn teeth. Author's No. 209-l/CBK. Obtained at Me 

 Song forest, Pre, North Siam, on IGtli April 191G by the collectors of 

 Messrs Williamson and Smith. 



Colour. Above finely speckled ochraceous-buff tending to 

 tawny on the lumbar region and rump; blacker on the head, lighter 

 on the sides, on the nape a faintly indicated stripe of the same colour 

 as the occiput ; the hairs of the posterior rump with long, dark brown 

 tips. Fore-limbs ochraceous-buff becoming ochraeeous-urange on their 

 outer sides; hind-limbs ochraceous-buff darkening to deep ochraceous- 

 tawnj' above the hocks ; upper side of tail ochraceous-tawny : ears 

 covered externally with fine, shoit, dark brown hair: upper eyelid part- 

 ly blackish. 



Underside of liead, body and tail white, this colour extending 

 along the fore-limbs as far as the hocks only but on the hind-limba 

 narrowly down the front of the cannon bones. 



1 Also a female with woni icctli, vide Kloss, 1* /.S , lilKJ, \> (i!i. 



2 Thomas, Aiiu. and Mag. Nat. Hist., (S), v, p. ^^(1910). 



JOURN. NAT. HKST. SOC. SIAM. 



