312 Mammals of Eastern Asia 
to have the tail extremely short. Lydekker states that it has 3 
pairs of nipples instead of the customary 6 of Sus. More infor- 
mation about it is needed. 
Recently Schwarz has stated that the Bearded Pigs are 
merely races of the Warty Pigs of Java, Sus verrucosus. He be- 
lieves that the Oriental Pigs fall into two major groups: the 
S. scrofa group, including cristatus and vittatus; and the bar- 
batus group. 
The distinction between the Crested or Indian Pigs and the 
Northern Pigs and Boars is difficult to define, but is supposed 
to be indicated by the mane or crest on the neck of cristatus and 
the larger size and greater complexity of its last molars (the sev- 
enth of the cheek teeth). Perhaps a good distinction lies in the 
greater breadth of the posterior part of the last molar in contrast 
to its more tapered form in the European Wild Boar. 
The Northern Wild Pig, Sus scrofa, is European typically. 
In the far East it is represented by a number of weakly denned 
forms or races : the Mongolian Pig, S. s. raddeana, extending 
from Jehol northward into Mongolia, Manchuria, and Siberia ; 
the North China Pig, S. s. moupinensis, found in Hopei, Shan- 
tung, and westward ; and the South China Pig, S. s. chirodonta, 
occurring through Chekiang and Fukien to Kwangsi and Hainan 
and possibly northern Indo-China and northern Burma. It is 
reasonably sure that the European Wild Pigs are ancestral to 
our domestic Pigs. 
The Mongolian Pigs roam through the great temperate 
forest belt, where they feed on acorns, the tubers of peonies, 
and the bulbs of lilies. They form an important part of the diet 
of the Siberian tigers. The color of the pelage, which has thick, 
woolly underfur, is mixed olive and brown, with a proportion 
of black hairs. Some individuals have whitish areas. The edges 
of the ears are white. There is a white area behind the angle of 
the mouth, and the throat is white. 
