248 ALLEN'S NATURALIST'S LIBRARY. 



Andes to Guayaquil. There is a very arid tract on the north- 

 east coast of Brazil ; but south of Cape San Roque the 

 coast forests extend to 30 south latitude, " clothing all the 

 valleys and hill-sides as far inland as the higher mountain 

 ranges, and even penetrating up the great valleys far into the 

 interior. To the south-west the forest country reappears in 

 Paraguay, and extends in patches and partly wooded country 

 till it almost reaches the southern extension of the Amazonian 

 forests. The interior of Brazil is thus in the position of a great 

 island plateau, rising out of, and surrounded by, a lowland 

 region of ever-verdant forests." Of its Anthropoid life the 

 Woolly Monkeys (Lagothrix), the Sakis (Pithecta), and the 

 Uakaris {Brachyurus) are confined to its Amazonian forests. 

 The Woolly Spider-Monkeys (Brachyteles) keep to the wooded 

 coast-regions of South-east Brazil, while the Titis (Callithrix) 

 do not range out of the tropics of South America. The 

 Howlers (Alouatta), the Spider-Monkeys (A teles), and the Capu- 

 chins (Cebus) roam nearly over the whole region the first 

 and last ranging from Costa Rica to Paraguay as well. The 

 Spider-Monkeys indeed extend over to the west side of the 

 Equatorial Andes, and in Guatemala across to the Pacific 

 coast. No species of Monkey, however, is known to inhabit 

 the western side of the Andes, to the south of the Gulf of 

 Guayaquil. 



THE BABOONS, GUEREZAS AND LANGURS. 

 FAMILY CERCOPITHECID^L. 



With the following account of the numerous species of the 

 genera of this family, we come to consider the first section of 

 the Old World, or Catarrhine* Monkeys. These are distin- 



* Kara, down ; fits, pivot, nose or nostril. 



