14 DR. J. E. GRAY ON THE JAPANESE PIG. [Jan. 28, 
The skulls of the common domestic Pig, which we have in the 
British Museum, for example, chiefly differ from the skull of a Wild 
Boar from Germany in the same collection in being smaller and 
considerably shorter, and in the angle of the forehead being much 
more acute and sudden, caused by the back of the two skulls being 
nearly of the same height, while that of the domestic one is generally 
much the shortest in length. The position and size of the holes for 
the blood-vessels and nerves are nearly the same in all these skulls. 
The underside of these two skulls and the forms of the palates are also 
Skull of Sus pliciceps. 
