MAMMALS. 



381 



ORDER VIII. PROBOSCIDIA (Elephants). 



The elephants are the giants among the land mammals. 

 They have five toes, each encased in its own hoof; they 



FIG. 168. A manatee (Trichechus americanus} feeding. After Elliott. 



have no incisors in the lower jaw, while the pair in the 

 upper jaw are developed into large tusks. Canines are 

 lacking, but there are seven molars in each half of each 



