CEBUS 77 



From Bolivia C. flavus comes, but the extent of its range is unknown. 

 On the eastern coast of Brazil, from Bahia to north of Rio de Janeiro, C. 

 VARiEGATUs occurs ; and in the forests of the Orinoco, and also in those 

 of the Amazon with its tributaries the Rio Negro, Rio Teffe, Rio 

 Madeira and Rio Japura, and in the Peruvian Province of Mainas, C. 

 ALBiFRONS is met with. In the forests of the Rio Teffe C. unicolor 

 has been procured ; and west of the mouth of the Rio Negro, C. macro- 

 CEPHALus is found. In the Brazilian Province of Minas Gerses in the 

 western part of the Rio Jordao C. versuta dwells ; and in the same 

 Province in the forests watered by the Rio Carinainha, C. libidinosus 

 occurs. In the Province of Sao Paulo, three .species have been 

 observed: C. cirrifer at Ypanema, south to New Fribourg between 

 the Rio Parahyba and Rio de Janeiro ; C. caliginosus in the vicinity 

 of St. Catarina, and C. vellerosus the precise locality of which is 

 unknown. In the Province of Paraguay, the most southern district in 

 which any species is found, C. azar.e occurs, extending its range north 

 westward into Matto Grosso west of the Rio Parana, and according to 

 Burmeister, (1. c.) into Bolivia. On the Lower Orinoco near La Union, 

 and at Marino on the Rio Caura, and also on the Rio Mocho, a tributary 

 of the Upper Rio Caura in Venezuela, C. apiculatus has been 

 obtained. On the Pacific coast in Colombia, locality unknown, C. 

 CHRYSOPUS was procured ; and near Bonda, C. malitiosus was found ; 

 while in the Cauca Valley C. c. nigripectus was taken ; and in the moun- 

 tains and in the forests of the Upper Magdalena at an elevation of 

 from 5,000 to 7,000 feet, C. fatuellus dwells. Peru has C. azarw 

 pallidus taken near Santa Anna, and in the Province of Cuzco ; and 

 near Callanga, C. unicolor cuscinus was obtained. In southeastern 

 Peru near Marcopata in the Inambari Valley C. fatuellus peruana 

 is found. Two species remain whose habitat is as yet unknown : C. 

 CRASSicEPS, supposed to come from the Rio Negro forest, and C. 

 FRONTATUS which may possibly occur near Ypanema in the Province 

 of Sao Paulo, Brazil. 



KEY TO THE SPECIES AND SUBSPECIES. 



A. Head without tufts on male. 

 a. Arms without yellow. 



a.' Hairs on body without yellow. 



a." Crown and line on side of face black, 

 sides of head beneath the ears 

 yellowish white C. apella. '^ UVtVo*^ 



