MAMMALS OF THE NATUNA ISLANDS II7 



maxillary toothrow (alveoli) 31.6 (34); first upper premolar 6.4 

 X 2.8 (7 X 2.6) ; mandibular toothrow (alveoli), 35.8 (38). 



Spechnens exa?nined. — One, the type. 



Remarks. — This is a pallid form of Tragiihis Javanictis^ a species 

 which apparently shows very little tendency to become differentiated 

 into local races. The characters of the Pulo Laut animal were pointed 

 out by Thomas and Hartert in 1895. 



SUS NATUNENSIS sp. nov. 



1894. Sus sp. Thomas and Hartert, Novitates Zoologicae, i, p. 660. Sep- 

 tember, 1894 (Bunguran). 



1895. Sus sp. Thomas and Hartert, Novitates Zoologicae, 11, p. 492. De- 

 cember, 1895 (Bunguran). 



Type. — Adult female (skin and skull) No. 104856 U. S. National 

 Museum. Collected on Pulo Laut, North Natuna Islands, August 6, 

 1900. Original number 609. 



Characters. — Externally much like the Tenasserim form of Sus 

 cristatus., but smaller ; body brownish in marked contrast with black 

 legs and face ; skull conspicuously shorter and broader. 



Fur. — The fur throughout consists of bristles with no admixture of 

 softer hairs. The bristles are everywhere less stiff than in the 

 Tenasserim pig, but the difference is most noticeable in the mane, 

 which, though well developed (about So mm. in length), is composed 

 of bristles very slightly coarser than those of the surrounding parts, 

 and of not more than half the diameter of the corresponding hairs in 

 females of S. cristatus. Muzzle, chest, belly and ears nearly bare. 



Color. — General color black, clear and unmixed with brown on 

 legs, throat, and face, but elsewhere heavily overlaid with brownish 

 buff, particularly on back and sides. The brownish wash ceases ab- 

 ruptly just in fi'ont of ears, leaving the face and cheeks clear black. 

 A conspicuous dull buff streak 100 mm. long and about half as wide 

 at middle extends back from angle of mouth to level of posterior can- 

 thus of eye. It is sharply outlined above by black of cheeks, and be- 

 low by that of chin. A faint buffy mark beneath eye. Tail like 

 back. 



Skull. — The skull while much shorter than that of Sus cristatus 

 from Tenasserim is actually broader. As a result the width across 

 postorbital processes is contained only about three times in occipito- 

 nasal length, as opposed to nearly four times in the related species. 

 Similarly the zygomatic breadth slightly exceeds one half of the basi- 

 lar length, while in Sus cristatus it is less than half. Width of pal- 



