Mam. Classification. 5 



move with a peculiar gliding character, and have been termed 

 Vermi formes [PYermin]. 



3. The third Sub- order, the Plantigrada, in which the 

 whole or nearly the whole of the hind foot forms a sole, and 

 rests upon the ground, 



contains Three Families : 

 1. The MelidcB. The members of this family have been clas- 

 sified sometimes among the Yiverridao, sometimes among the 

 Ursidae (Linna3us). 2. The Ursidce, which differ from all the 

 preceding families in the nature of the molar teeth, which, 

 although compressed in form, are furnished with tubercular 

 crowns. And 3. The Cercoleptidce, or Kinkajous, with very 

 long prehensile tail, short muzzle, and slender extensile 

 tongue. 



4. In the last Sub-order, the Pinnigrada, both fore and hind 

 feet are short, and expanded into broad webbed paddles for 

 swimming, the hinder ones being bound in with the skin of 

 the tail. 



It includes Two Families : 

 1. The Phocidce, which have incisor teeth in both jaws, 

 generally throughout life, canines of moderate size, and 

 molars trenchant ; and 2. Trichcecidce^ which lose most of 

 their incisor teeth early, have upper canines enormously 

 developed, passing between the small canines of the lower 

 jaw, and projecting below the chin, and molars of conical 

 form. 



We now proceed to consider the purely vegetarian section 

 of the Mammalian Class, which is characterised by having 

 hoofs instead of claws, and is thence termed 



*' ungulata:' 



(Orders YIII. X. inclusive.) 

 Cuvier divided his ^'sub-class" Ungulata into two Orders, 

 which he named Pachydermata and Ruminantia, and placed 



