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. Qidipomidas — Marmosets. 

 Genus V. Callithrix — True Marmosets. 

 Genus VI. Calucebus — Titi Monkeys. 



FAMILY II. Cebid^. 



Subfamily I. ALOUATTiN.ffi. 



Genus Alouatta — Howlers. 



Subfamily II. Pithecin^. 



Genus I. Pithecia — Sakis. 



Genus II. Cacajao — Uakari. 



Genus III. Saimiri — Squirrel Monkeys. 



Subfamily III. Acting. 

 Genus Actus— 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. 



