264 ALOUATTA 



Coiba Island, off the west coast of Panama, A. p. coibensis has been 

 procured. On the Island of Trinidad one species dwells, A. INSU- 

 LANUs; and in the British and French Guianas, and probably also in 

 Dutch Guiana, (though no examples from there were obtainable), to 

 the coast north of the Amazon, A. macconnelli has been obtained. 

 In Venezuela in the forests of the Lower Orinoco, (Humboldt), and in 

 the maritime Provinces of Brazil from Bahia to Espirito Santo, A. 

 UR-siNA occurs, and also according to Tschudi, under the name of 

 Mycetes flavicaudatus it is found in Peru, in which case it must 

 necessarily inhabit the intervening portions of Brazil. From the 

 vicinity of Para, on the Rio Muria (Natterer), and between the Rio 

 Xinges and Island of Marajo, (Spix), on the Rio Araguay, (I. Geoff.), 

 and in the vicinity of Borba near the mouth of the Rio Madeira, 

 (Natterer), A. beelzebul occurs. Bates states that the natives assert 

 there is a "yellow handed" monkey on the Island of Marajo, which 

 may be this species. On the Lower Amazon in Maranhao A. ululata 

 appears to have its range. Proceeding on in eastern Brazil, A. c.^rava 

 ranges from the Province of Bahia to that of Corrientes in Argentina ; 

 having been observed in the low forests of Bahia and Minas Gerses 

 (Spix), in the Province of Goyas, (Castelnau), and on the Upper Rio 

 Paraguay, and near the town of Matto-Grosso (Natterer), and also at 

 the junction of the Rio Parana and Rio Paraguay, Argentina, 

 (Rengger). On the Rio Juara, a tributary of the Upper Amazon, A. 

 juara has been obtained. In Colombia, A. seniculus is found, and 

 according to Spix who obtained a specimen, it also occurs in the forest 

 between the Rio Negro and Rio Solimoens, his example having been 

 secured near the borders of Peru. In Ecuador at Vinces on the west 

 coast A. .EQUATORiALis was procured; and finally, in Bolivia in the 

 Province of Sara, A. sara occurs. 



KEY TO THE SPECIES. 



A. General color in males black or partly black. 

 o. Sexes different. 



a.' Male all black ; females and young straw 



color A. caraya. 



b.' Male with back rich chestnut red ; female 



raw umber A. ululata. 



b. Sexes alike. 



o.' All black A. vUlosus. 



