CHARACTERS OF THE SOUTH AMERICAN MONKEYS. 



113 



The discovery of Calliviico, with the dentition of the Cebidae 

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

 to the status to be accorded to these two groups. CalUmicOj 

 hitherto, has-been included in the Cebidte on the strength of the 

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

 importance to the extremities, and regard CaUwiico as a primitive 

 Marmozet. In that case the Callimiconinse will be a subfamily of 

 Hapalidse. 



The genera of Cebidae have been classified in various sub- 

 families, Elliot admitting : — 



1. Cebinse (Ateles, Br^achyteles^ Lagoihrix^ and Cebus). 



2. Alouattinse (Alouatta). 



3. Pitheciinae (Pithecia, Cacajao, Saimiris). 



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 Saimhns with Cacajao or Cebus 

 with Ateles. Elliot extricated himself from the difficulty of 

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

 Hapalidse, 



pRoc. ZooL. ?rioc.— 1920, No. Vlll, 



8 



