2i6 Lloyd's natural history. 



ward on to the nape of the neck; sides of face, throat, chest, and 

 front part of shoulders, greyish-yellow. 



Distribution. — Widely distributed in the great forests from 

 Paraguay to the United States of Colombia. 



Habita.— This Capuchin wanders about among the high forest 

 trees in small companies of from ten to a dozen, the larger 

 number being females. It is very timid, and keeps well out of 

 sight, so that it is difficult to watch its habits. Rengger, in 

 his "Saiigethiere von Paraguay," had more than once an ex- 

 cellent opportunity of observing these interesting Monkeys, and 

 has given a capital account of them. He specially mentions the 

 great affection the mother has for her offspring. " The mother's 

 love," he says, " shows itself by the great care with which every 

 old one handles her young, by laying them on the breast, by 

 watching them, by searching their fur, and by the attacks they 

 make on any intruder." In January the female gives birth to 

 a single young one, and keeps it at her breast for the first week ; 

 later on she carries it partly on her back, partly under her arm. 

 When sleeping the Weeping ^ai curls itself up, covering its 

 face with its arms and tail. 



The leader of a troop shares his feelings with the others by 

 various motions, and by giving utterance to certain noises, 

 which are taken up by the others. Their feelings are also ex- 

 hibited by a kind of laughing and crying. Rengger kept some 

 of these Monkeys for several years in captivity in their own 

 country, and says that, when happy, they uttered a peculiar 

 tittering sound ; they express agreeable sensations by drawing 

 back the corners of the mouth without uttering any sound ; 

 this he supposed to be laughing, but, as Mr. Darwin re- 

 marks, it would be more appropriately called a smile. Wheq 



