264t CLASS MAMMALIA. 



serve the most profound silence even when they are 

 wounded. He did not at first notice them, until his atten- 

 tion was summoned by their flinging at him branches of 

 trees. They were not at all frightened by the discharge of 

 fire-arms. He killed three and twenty of them in less than 

 an hour. 



The individual of which F. Cuvier gives a figure, he re- 

 presents to have been remarkably beautiful and gentle, 

 although an adult. He was fond of being scratched by 

 those whom he knew, and seldom exhibited any desire to 

 hurt. When he felt contented he usually expressed his sa- 

 tisfaction by a peculiar gentle grunt, which this author de- 

 scribes as like the syllable grau, with the sound a little pro- 

 longed on the r. This Callitrix was about one or two and 

 twenty inches in length, from the occiput to the callosities : 

 the tail much longer. 



A species of Guenon, not enumerated by our author, but 

 described by his brother M. F. Cuvier, in his great work on 

 the Mammalia, is the Grivet. It corresponds in many par- 

 ticulars with the Malbrouc and the Callitrix, and appears to 

 form between them an intermediate link. M. F. Cuvier 

 hesitated for some time to determine whether the Grivet 

 was a distinct species or merely a variety, but having exa- 

 mined many individuals, he ascertained that the organic pe- 

 culiarities distinguishing them from the Malbrouc and Cal- 

 litrix were invariably the same, and those differences he 

 considered sufficiently important to be deemed specific. 



This animal resembles the Malbrouc in its general co- 

 lours, but differs from it in the form of the head which is 

 less rounded. It differs from the Callitrix in being of a 

 much more sombre green, having a white band over the 

 eyebrows, and tail gray to the very extremity. It resembles 

 it in the pyramidal form of the head, fyc. 



All the outer parts of its body except the limbs and tail 

 are of a dirty green, which results from hairs annulated with 



