1 72 APES, MONKEYS, AND LEMURS 



In Guiana this species is replaced by the closely allied white-chested titi (C. 

 amtda), which is distinguished by the presence of a pure white spot on the chest ; 

 the general color being black, tinged with red. 



Another Brazilian species is the Moloch titi (C. moloch) which, 

 while agreeing with those just noticed in the nature of the fur, differs 

 in the color of the hands and feet, being of nearly the same gray hue as that of the 

 back. The general color of the upper parts is dark gray, with a grizzle of black 

 and red ; the cheeks, chest, and under parts are reddish ; and both the hands and 

 feet dark gray. 



The reed titi (C. donacophila] is a paler form, closely allied to the moloch. 

 Mr. Bates states that while on the I/)wer Amazon, when going ashore early one 

 morning, he found the forest resounding with the yelpings of a flock of whaiapusai 

 monkeys, which he thought probably belonged to this species. Although unsuc- 

 cessful in obtaining a specimen, he was enabled to see them for a moment, and 

 describes them as of small size, and clothed with long fur of a uniform gray color. 



The black-fronted titi (C. nigrifrons), differs from any of those yet 



10 T-J ' noticed by its rigid and bristly fur, and also by both the hands and 



feet being black. Its general color is gray, tinged with black ; but 



it takes its name from the black forehead ; the ears, a spot on each side of the neck, 



as well as the hands and feet, and the inner surfaces of the fore-arms and legs, 



being of the same sombre tint. The fur of the tail has a reddish tinge, while the 



back of the crown of the head and the nape of the neck are of a whitish gray. 



The nearly related brown titi (C. brunnea], which is also known by the name 

 of the masked titi, is subject to a great amount of individual variation in color. 



The last representative of these monkeys we shall notice is the 



" . . black-handed titi (C. melanochira) , which is one of two species which, 



while agreeing with the one last mentioned in its black hands and 



feet, is readily distinguished from the whole of those yet mentioned by the fur 



being soft and woolly, without any intermixture of long, stiff hairs. The general 



color of this titi is reddish, but the crown of the head, the throat, and the inner 



surfaces of the limbs, are a mixture of black and gray. There is a variety known 



in which the fur is bright red. 



This species has been obtained from Bahia, on the eastern side of equatorial 

 Brazil, but we have not come across any account of its habits, neither are we aware 

 that it has ever been brought alive to Europe. 



THE SAKI MONKEYS 



With the Saki monkeys we come to a group containing only two genera, 

 which, while resembling the douroucoulis and their allies in the nonprehensile 

 character of their tails, are distinguished from them (and likewise from all other 

 American monkeys) by the circumstance that all the front or incisor teeth of the 

 lower jaw, instead of being vertical, are inclined forwards. In this respect these mon- 

 keys resemble the lemurs. Like the titis, they approximate to the howling monkeys 

 by having the sides of the hinder part of the lower jaw considerably expanded. 



