Vol. XV, pp. 51-52 March 5, 1902 



PROCEEDINGS 



OF THB 



BIOLOGICAL SOCIETY OF WASHINGTON 



A NEW PIG FROM SUMATRA.* 

 BY GERRIT S. MILLER, Jr. 



Among some mammals collected by Dr. W. L. Abbott on 

 the Indragiri River, eastern Sumatra, during September, 1901, 

 and presented to the United States National Museum, is an 

 adult male of the Nang-oi, a large pig related to the Bornean 

 Sus barbatus Miiller and Siis longirostris Nehring. It is read- 

 ily distinguishable from the species of Sus hitherto described, 

 and may be known as: 



Sus oi sp. nov. 



Type.—Kd\x\i male (skin and skull) No. 113,150 United States National 

 Museum. Collected on banks of the Indragiri River (about 30 miles 

 above mouth) eastern Sumatra, September 20, 1901, by Dr. W. L. Ab- 

 bott. Original number 1319. 



Characters. — Externally most like Sus barbatus, but with body even 

 more scantily haired (there is no mane and the skin is nowhere concealed 

 by the bristles except on the face), and two well-developed warty pro- 

 tuberances on muzzle. Skull essentially as in Siis longirostris. Teeth 

 smaller than in Sus 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 



♦Published here by permission of the Secretary of the Smithsonian 

 Institution. 



10— Biol. See. Wash. Vol. XV, 1902. (51) 



