220 



A XI MA I. BIOLOGY 



Fig. 401. — Sacred Monkey of India {Semnopithecus entellus). x & 



Monkeys, Apes, and Man. — 



Study the figures (399, 400); 

 compare apes and man and ex- 

 plain each of the differences in 

 the following list : ( 1 ) feet, three 

 differences; (2) arms; (3) brain 

 case; (4) jaws; (5) canine 

 teeth ; (6) backbone ; (7) dis- 

 tance between the eyes. 



A hand, unlike a foot, has 

 one of the digits, called a 

 thumb, placed opposite the 

 other four digits that it may be 

 used in grasping. Two-handed 

 man and four-handed apes and 

 monkeys are usually placed in Fig. 402. -Lemur (Z« 



goz). X ia. Which digit bears a 



one order, the Primates, or c i aw ? 



