XIX.] 



CARNIVORA. 



315 



fin-like, and much everted ; but the hallux is still shorter 

 than any of the other digits, and the two outer toes are the 

 longest. 



In the Seals the pes is completely modified for a special 

 purpose. It has no longer any function as an organ of 

 support or progression on land, and is habitually directed 

 backwards, with the dorsal surface outwards, and the 



Fig. 



16. — Dorsal surface of right pes of young Elephant Seal iJTacforkimis pro- 

 boscided), \, showing the epiphyses. The letters as before. 



plantar surface in contact with the corresponding part of 

 the opposite limb. The calcaneum is very short, its tube- 

 rosity being almost obsolete. The two lateral digits (first 

 and fifth) are both longer and much stouter than the others ; 

 the middle digit is the shortest. In the Elephant Seal 

 {Macrorhinus proboscidea), all the phalanges (except the 



