THE NEW SUMATRAN PIG. 57 



is nowhere concealed by the bristles except on the face), and 

 two well-developed warty protuberances on muzzle. Skull es- 

 sentially as in aSW longirostris. Teeth smaller than in Sits 

 longirostris or S. barbatus, the posterior lower molar greatly 

 reduced in size, much as in Sus celebensis. 



External features. — The body and neck are sparsely and 

 uniformly sprinkled with black bristles which nowhere conceal 

 the yellowish white skin. On sides and belly they are very 

 stiff, closely appressed and directed backward, about 20 mm. 

 in length and nearly -5 mm. in diameter. On legs they are less 

 coarse in texture and sufficiently numerous to produce a distinct 

 dark shade. Along middle of neck and back they increase in 

 length to about 50 mm., the diameter at the same time decreas- 

 ing to -3 mm. The hairs form no mane, but throughout the 

 region where it occurs in other hogs the hairs are less scattered 

 and appressed than elsewhere. They are black, tipped with yel- 

 lowish brown. Head as in Sus barbatus,* except that about mid- 

 way between eye and muzzle there are two well-developed pro- 

 tuberances 30 mm. in length and 20 mm. in breadth densely 

 coverd with stiff antrorse bristles. These bristles as well as those 

 of the upper part of the face are uniformly yellowish brown. On 

 cheeks they are strongly intermixed with black. Tail scantily 

 covered with stiff black hairs about 25 mm. in length. They 

 nowhere conceal the skin, but on terminal third are sufficiently 

 close-set along sides to form a distinct flattened brush. 



Skull. — The skull so closely resembles that of an adult 

 male Sus longirostris from Borneo that it might readily be sup- 

 posed to belong to an individual of the same species. 



Teeth. — The teeth, with the exception of the canines, are 

 uniformly smaller and narrower than those of Sus longirostris. 

 Upper incisors wide apart, the second separated from both 

 first and third by a space of 15 mm. (in S. longirostris the dis- 

 tance between second and first is 5 mm., that between second 

 and third only 2 mm.). Posterior upper.molar with last tuber- 

 cle less than half as large as in the corresponding tooth of S. 



*See plate xxx, of Verhandel. over de Natuurlijke Geschiedenis 

 der Nedeii. overzeesche bezittingen. 



R. A. Soc, No. 45, 1905. 





