208 ON MAMMALS FROM BILLITON. 



Malays call Tragulus napu, Blandoh, perhaps a contrac- 

 tion of Pelandock. 



This Billitou-specimen is quite different in color from 

 all other hitherto described species or varieties and , com- 

 pared with our very large number of Tra^/u^ws-specimens , 

 there only is a single specimen with which it agrees, na- 

 mely an individual collected by Teysmann in Banka: the 

 Banka-specimen is an adult, the Billiton-specimen a nearly 

 adult one (the hindmost molars are not yet developed). As 

 will be clear by reading the following description it most 

 likely can be brought under one of the known species and 

 so I think it correct to describe it not as a new species, 

 but rather as a melanistic variety of 



Tragulus napu. 



It attains the size of Tragulus napu and agrees with 

 this species too in color of the upper parts, that is to say 

 it has such a dark color as the darkest colored specimens 

 of napu present. From eye to nose runs a black stripe like 

 in napu and stanleyanus. Nape of the neck (in javanicus 

 the nape of the neck and sides of throat are grizzled, in 

 kanchil there is a well defined black band from between 

 the ears along the nape of the neck) and round the throat 

 of a shining black , only interrupted by the well known 

 white throat-bands. In napu and stanleyanus there are five, 

 in javanicus and kanchil three white throat-bands meeting 

 on the chin in a broadly developed white spot; in our 

 melanistic specimens however the chin is bald, the bands 

 along the sides of the chin are very small, hardly visible 

 and in the Billiton-specimen only represented by a white 

 spot on the posterior angle of the lower jaw. The three 

 other white streaks are very small and meet together in 

 the Banka-specimen , meanwhile in the Billiton-specimen 

 only the central streak is complete and of the two side- 

 streaks only the posterior half slightly is present. Belly 

 like in kanchil with a very well developed dark brown co- 

 lored line along its middle. 



Notes from the Lieyden JMuseum , Vol. XIII. 



