Haggerty, Imitation in Monkeys. 



341 



eleven animals from two genera and seven species. Eight of them 

 represent five species of Cebus monkeys. This is the genus with 

 which we are familiar as the consort of organ grinders. The home 

 of these monkeys is South America, especially the head waters of 

 the Amazon and northward into Central America, where they live 

 a gregarious life in the tree tops, feeding on fruit, nuts and insects. 



TABLE 1. 



Number, Species, Sex and Probable Age of Animals Used in the 

 Investigation. 



They travel about by leaping from one tree to another; in this 

 arboreal life their long grasping tails serve them better than a 

 fifth hand would. The facial jjortion of the skull is small in com- 

 parison with the cranial portion, and many specimens have quite 

 prominent foreheads. Forbes notes that the cerebral cortex is 

 almost as much convoluted as it is in the Old World Apes. The 

 forehead, usually bare of hair, is often wrinkled, giving the mon- 

 keys the appearance of being "burdened with sorrows, which," as 

 Dr. Hornaday remarks, "most captive monkeys certainly are!" 



The Cebus monkeys are cowards except toward those they can 

 easily vanquish. One fight is usually enough to settle the supre- 

 macy of a cage. The whipped animal seldom makes another effott 



