CHARACTERS OF THE SOUTH AMERICAN MONKEYS. 113 



The discovery of Calliviico, with the dentition of the Oebidse 

 and the hands and feet of the Hapalidse, raises the question as 

 to the status to be accorded to these two groups. Callimico, 

 hitherto, has been included in the Cebidse on the strength of the 

 retention of the last molar. Personally, I should attach more 

 importance to the extremities, and regard Ccdlimico as a primitive 

 Marmozet, In that case the Callimiconin£e will be a subfamily of 

 Hapalidaj. 



The genera of Cebidfe have been classified in various sub- 

 families, Elliot admitting : — 



1. Cebinse (Afeles, Brachyteles, Lagothrix, and C'ebus). 



2. Alouattinse [Alotiatta). 



3. Pitheciinas {Pithecia, Cacajao, Sahniris). 



4. Aotinse {Aotus). 



Without in any particular endorsing this classification, I do not 

 feel prepared to interfere with it. There appear to me to be no 

 particular reasons for associating Saimiris with Cacajao or Cebus 

 with Ateles. Elliot extricated himself from the difficulty of 

 Callicebus by placing it, quite indefensibly of course, with the 

 Hapalidae. 



pRoc. Zoou Soc— 1920, No, Tilt 



