1902.] NATUKAL SCIEJSCKB OF PHll^AUtLrHlA. 147 



throat stripes are interrupted by the brown, producini; a pattern 

 suggestive of that of T. bung\iranensis. 



Su8 vittatus MiiUer and Schlegel. 



A female pig from Linga Island and a similar specimen from the 

 ludragiri river, Sumatra, appear to be referable to the Sumatran 

 representative of Sus vittaliis. They are small animals, scarcely 

 exceeding Sus nicoharensis in size, therefore quite distinct from Sus 

 cristatiis. 

 Sus oi Miller. 



1902. Sus 01 ^tliller, Proc. Biol. Soc. Washington, XV, p. 51, March 

 5, 1902. 



The discovery of the nang-oi, the Sumatran representative of 

 Siis barbatus and Siis longirostris, is one of the most interesting 

 results of Dr. Abbott's work in the East Indies. The animal is 

 among the largest of wild pigs, the type specimen, an adult but not 

 aged boar, weighing 113 kg. (250 lbs.). Its measurements are as 

 follows: Total length, 1,870; head and body, 1,575; tail, 295; 

 height at shoulder, 850 ; height at rump, 800 ; ear from meatus, 

 88 ; ear from crown, 97 ; width of ear, 75. Skull : Greatest 

 length, 480 ; basal length, 405 ; zygomatic breadth, 162. 

 Although only one specimen was secured, the nang-oi is abundant 

 in the forests and sago plantations along the banks of the Indragiri 

 river. Its footprints may always be distinguished from those of 

 Sus vittatus by their much greater size. 

 Ratufa palliata sp. nov. 



Type. — Adult male (skin and skull), Xo. 113,162 United 

 States National Museum. Collected on the Indragiri river, eastern 

 Sumatra, September 23, 1901, by Dr. W. L. Abbott. Original 

 number 1,327. 



Characters. — In general similar to Ratvfa bicolor of Java, but 

 yellow areas less bright, blackish of tail appearing conspicuously at 

 surface, and whole back from shoulders to hips light yellowish 

 brown in striking contrast with blackish thighs, neck and outer 

 surface of front legs. Skull with nasals shorter and broader than 

 in the Javan animal. 



Color. — Back and sides uniform cream-buff a little tinged with 

 clay color, especially along median dorsal region. Posteriorly this 

 darkens abruptly through dull ochraceous-rufous to the clear 

 blackish-brown of thighs and ouler surface of hind legs. In 



