xlii INTRODUCTION 



SUBORDER II. ANTHROPOIDEA. 

 FAMILY I. Callitrichid^. 



Genus I. Seniocebus — Bald-headed Tam- 



arins. 

 Genus II. Cercopithecus — Black Tamar- 



ins. 

 Genus III. Leontocebus — Tamarins. 

 Genus IV. GEdipomidas — Marmosets. 

 Genus V. Callithrix — True Marmosets. 

 Genus VI. Callicebus — Titi Monkeys. 



FAMILY II. Cebims. 



Subfamily I. Alouattin^:. 

 Genus Alouatta — Howlers. 



Subfamily II. Pithecin^:. 



Genus I. Pithecia — Sakis. 



Genus II. Cacajao — Uakari. 



Genus III. Saimiri — Squirrel Monkeys. 



Subfamily III. Aotin^e. 

 Genus Aotus — Douroucouli. 



Subfamily IV. Cebin^e. 



Genus I. Ateleus — Spider Monkeys. 

 Genus II. Brachyteleus — Woolly Spider 



Monkeys. 

 Genus III. Lagothrix — Woolly Monkeys. 

 Genus IV. Cebus — Capuchins. 



