Ixxxvi INTRODUCTION 



151. Callicebus am ictus. Upper Amazon region, Brazil. 



152. Callicebus ustofuscus. Brazil, exact locality unknown. 



153. Callicebus cupreus. Regions of the Peruvian Amazon; Rio 



Solimoens, Rio Ucayali, and Rio Huallaga ; Cotopaza River, 

 and Andoas, Ecuador. 



154. Callicebus caligatus. Banks of the Rio Madeira, near Borba, 



western Brazil. 



155. Callicebus melanochir. East coast of Brazil from the Rio 



St. Matheus to Sertan de Bahia. 



156. Callicebus p^nulatus. Banks of the Rio Pastas, Ecuador. 



157. Callicebus egeria. Teffe, Middle Amazon, Brazil. 



158. Callicebus leucometopa. Ecuador. 



159. Callicebus subrufus. Pachite, Ucayali River, Peru 



160. Callicebus hoffmannsi. Urucurituba, Santarem, Lower Ama- 



zon, Brazil. 



161. Callicebus ornatus. Colombia and Peru. 



162. Callicebus remulus. Santarem, Lower Amazon, Brazil. 



163. Callicebus donacophilus. Province of Sara, Bolivia. 



164. Callicebus emili^e. Received from Para. Range unknown. 



165. Callicebus pallescens. Paraguay. 



166. Callicebus moloch. Banks of the Rio Para near the mouth 



of the Rio Tapajos, Lower Amazon, Brazil. 



167. Callicebus cinerascens. Forests of the Potomaio and Iga 



Rivers, on the border of Peru. 



168. Callicebus nigrifrons. Province of Minas Geraes to that of 



Rio de Janeiro, Brazil. 



169. Callicebus gigot. South of Bahia near Ilheos; New Frei- 



bourg, between the Rio Parahyba and the mountains north 

 of the Bay of Rio de Janeiro. 



170. Callicebus person atus. Region of the Upper Amazon, south 



to Latitude 14°. 



171. Callicebus brunneus. Falls of the Bonaneira, Rio Marmore, 



Brazil. 



Cebid^. 



Alouatta. 



Range of the Genus. 



Neotropical Region. 



Range of the Species. 



172. Alouatta caraya. Upper Amazon, Southern Brazil; Argen- 



tine, and Bolivia. 



