THE ORDERS OF MAMMALS 447 



The family Hominidce contains the single living species, 

 Homo sapiens, or man. Man differs from the other primates 



FIG. 315. The hoolock, a gibbon. (From Elliott. Courtesy American 

 Museum of Natural History.) 



in the size of the brain, which is about twice as large as that of 

 the highest monkey, and in his erect, bipedal locomotion. The 

 hairy covering is not well developed, and the great toe is not 



