The New Sumatran Pig. 



Sus oi in the Rio-Linga Archipelago. 

 ~By C. Boden Kloss, f.z.s. 



In September 1901 a single specimen of a peculiar pig was 

 obtained up the Indragiri River, E. Sumatra by Dr. W. L, 

 Abbott who presented it to the U. S. National Museum. Accor- 

 ding to the natives of the locality, the " nang-oi," as they call 

 it — thus differentiating it from the common pig — is abundant in 

 the forest and sago plantations along the banks of the river and 

 its foot-prints may always be distinguished from those of Sus 

 vittatus by their much greater size. 



From this one specimen a new species, Sus oi was described 

 and it was, until recently, the only one on record, but lately other- 

 examples of what appears to be the same animal have been 

 obtained by Mr. J. E. Rornenij and others on Pulo Battam. 

 As most of the islands of the Rio-Linga Archipelago possess 

 their own forms of monkeys, rodents, mouse-deer, etc., it is pos- 

 sible that these pigs may eventually be found to differ sufficient- 

 ly from the animal of the Sumatran mainland to form an in- 

 sular race although less probably than is the case with the 

 others, for pigs do not seem liable to as great variation. At 

 present, however, they appear to be the typical Sus oi. 



Mr. Rornenij communicates the following with regard to 

 them. 



"These pigs were hunted in the way customary here, viz., 

 with a number of Kling trackers and beaters and a pack of wild 

 dogs, mostly pariahs. During the few weeks that I had at my 

 disposal to go out shooting I went regularly to Pulo Battam 

 and got to know the places where these pigs were to be found, 

 with the result that we bagged several of them and amongst 

 these some fine big boars. The largest one that was shot there 

 was unfortunately lost on the way back, as the sampan, in 



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



