42 CERCOPITHECUS TALAPOIN. 



rowed posteriorly and the two hindmost tubercles are 

 so small that, superficially examined, they might be con- 

 sidered to be one single tubercle. It may be remembered 

 that this peculiar shape of the last upper molar cannot 

 be considered to be an essential character of any specific 

 value, as it is met with in the skull of some specimens 

 belonging to different species , while in others it is entirely 

 wanting. This peculiar form I found , for instance , in 

 skulls of: 



C. cynosurus (Jent. Oat. ost. e.) '), C. callitrichus (Jent. 

 Cat. ost. j.), C. pygerythrus (Jent. Cat. ost. f, c), C. mona 

 (Jent. Cat. ost. c), C. pogonias (Jent. Cat. ost. a.), C. diana 

 (Jent. Cat. ost. f.), C. hnttikoferi (Jent. Cat. ost. d.). 



The stuffed specimens of Talapoin , from which the skulls 

 were taken , agree perfectly with the descriptions given 

 by Buffon and Geoffroy and with the figure in the » Mam- 

 mifères" of Cuvier. 



Before giving my own remarks on this matter, I may 

 be allowed to make a short quotation of what Geoffroy 

 has said on his genus Miopithecus : 



Mémoires du Muséum d'Histoire Naturelle. 

 T. XVII. 1828. 



On p. 144 the author says that he has seen a live 

 Talapoin and that »la position des narines est tellement 

 »incertaine que je I'ai vu prendre plusieurs fois pour un 

 » singe américain." 



Comptes-rendus hebdomad aires des seances 

 de I'A cade mie des Sciences. T. XV. 1842. 



Here, p. 720, two species of a new genus (i1ƒ^o/)^Y^ecMs) 

 are mentioned: »qui caractérisent a la fois plusieurs modi- 

 »fications tres remarquables du système dentaire et des or- 

 »ganes des sens." In a note is said »Ces deux espèces sont 

 »le Talapoin de Buffon et une espèce nouvelle, Ie Miopi- 

 »thèque chevelu {M. capillatus), tres voisin du Talapoin, 



1) Muséum d'Histoire Naturelle des Pays-Bas. Tome IX. Jentink, Catalogue 

 steologique des Mammifères. 



Notes from the Leyden IMuseum , Vol. XII. 



