270 



BRANCH YERTEBRATA. 



opening into the mouth, are present in many of the 

 forms, though not characteristic of the group. The 



FIG. 471. 



Group of Monkeys. 



brain is generally well developed, and the animals are 

 more intelligent than their New World relatives. 



the troop pass over, a mischievous monkey occasionally playing off a practical 

 joke on some member as he hurries forward. To get the bridge across, the first 

 monkey lets go and the chain swings over, perhaps ducking one or two, when all 

 unfasten and catching at the branches, proceed on their journey. 



