262 



BRANCH VERTEBRATA. 



North America, should be included in one species known 

 as Felis borealis (fe'iis borea'lis). They all live upon 



FIR. 45fi. 



Lynx can a den' sis. Lynx. ( 5 1 3 .) 



birds and small mammals, pursuing them among the 

 branches of the trees as well as upon the ground. Their 

 gait is by bounds, the animal landing upon all four feet 

 at once. 



PIG. 457. FIG. 453. 



O do bee' nus ros' ma rus. 

 North Atlantic Walrus. (J 5 .) 



Canine Teeth and Under Jaw 

 of Walrus. 



The Walrus (wol'rtts) has the canines of the. upper 

 jaw prolonged into two tusks, which project downward 



