220 WALRUS. 



The neck is very short, the body extremely bulky, 

 rounded, of nearly equal diameter for half its length, 

 and tapering to the scarcely distinct blunt tail. 

 The fore feet are very short, the toes connected by 

 the skin, which extends beyond the extremely small 

 claws; the hind feet larger, fan-shaped when ex- 

 panded, with larger claws, beyond which the skin is 

 still farther extended. The entire skin, excepting 

 the soles and the interdigital membranes, is covered 

 with short, stiff, adpressed hair, of a yellowish very 

 light-grey colour. On the lower part of the face 

 the hairs are very short, on the edges of the lips 

 woolly, and of a reddish tinge. On each side of the 

 upper lip are twelve rows of short, blunt, horny, 

 flattened bristles. 



The normal dentition of the Walrus is shown by 

 the skull of a young individual in the Museum of 

 the Edinburgh College of Surgeons. In the upper 

 jaw there are on each side three incisors, the first 

 or inner extremely small, the second a little larger, 

 the third or outer disproportionately large, being 

 equal to the largest grinders. The socket of this 

 tooth is placed in the intermaxillary bone, but to- 

 wards its mouth it is partly formed by the maxillary. 

 The small incisors have deep conical sockets. The 

 canine tooth is displaced, being thrust outwards 

 beyond the line of the other teeth, and causing the 

 peculiar bulging of the head. The lateral incisor 

 is on the level of its anterior margin, and the first 

 grinder is opposite to its middle. There are five 

 grinders, having conical obtuse sockets, and conse- 



