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INTRODUCTION 



Family Cebim:. 



Subfamily A. Alouattin^e. 



Genus Alouatta. 



Alouatta Laceped., Tabl. Div. Sous-div. Ordres et Genr 

 Maram., 1799, p. 4. Type Simia beelzebul Linnaeus. 



171. Alouatta caraya Vol. 



172. Alouatta ululata 



173. Alouatta villosus 



174. Alouatta beelzebul 



175. Alouatta palliata 



176. Alouatta p. mexicana 



177. Alouatta p. coibensis 



178. Alouatta .equatorialis 



179. Alouatta ursina 



180. Alouatta seniculus 



181. Alouatta macconnelli 



182. Alouatta insulanus 



183. Alouatta juara 



184. Alouatta sara 





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Subfamily B. Pithecin^;. 



Genus Pithecia. 



Pithecia Desmar., Nouv. Diet. Hist. Nat., XXIV, 1804, 

 p. 8. Type Simia pithecia Linnaeus. 



185. Pithecia monacha Vol 



186. Pithecia capillimentosa 



187. Pithecia albicans 



188. Pithecia pithecia 



189. Pithecia chrysocephala 



190. Pithecia albinasa 



191. Pithecia satanas 



192. Pithecia chiropotes 



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