168 



STUDIES, SCIENTIFIC AND SOCIAL 



CHAP. 



up the tree, and, when sufficiently high, the first one lets 

 go, and the swing either carries him across to a bough on 

 the opposite side or he climbs up over his companions. 

 The species here figured inhabits Mexico, and exhibits 

 the chief characteristics of the genus to which it belongs. 



Fio. 31.— BLACK-HANDED SPIDKR-MONKEY {Atdcs mdanochlr). 



Closely allied to the last are the Woolly Monkeys of the 

 genus Lagothrix, which have an equally well-developed 

 prehensile tail, but better proportioned limbs, and a thick 

 woolly fur of a uniform gre}^ or brownish colour. They 

 have well-formed fingers and thumbs, both on the hands 



