BRITISH QUADRUPEDS. 



viviparous quadrupeds have a dorsal spine, 

 formed by a series of vertebras. They likewise have 

 warm blood ; and two auricles and two ventricles to 

 the heart. They produce their offspring alive, and 

 nourish them from mammae or lactiferous teats. 



The British genera are subdivided into quadrupeds, 

 * With Nails or Claws. 



1. Having four front-teeth, and two canine-teeth in each jaw. PRIMATES. 



2. Having two, six, or ten front-teeth, and two canine-teeth 



in each jaw. FERJS. 



3. Having two front-teeth in each jaw, and no canine-teeth. GLIRES. 



** With Hoofs. 



1. Having no front-teeth in the upper jaw. PECOR A. 



2. Having front-teeth in both jaws. BELLU*. 



* With Nails or Claws. 

 1. Four front-teeth, and two eanine-teeth in each jaw. 



LINNEAN ORDER I. PRIMATES. 



E Front teeth wedge-shaped, for cutting food; those of the 

 upper jaw four in number, and parallel. The females have 

 two (a few species four) pectoral teats. 



THE 



