Previously, New World monkeys were divided between Callitrichidae and this family.
For a few recent years, marmosets, tamarins, and lion tamarins were placed as a subfamily (Callitrichinae) in Cebidae, while moving other genera from Cebidae into the families Aotidae, Pitheciidae and Atelidae.
The most recent classification of New World monkeys again splits the callitrichids off, leaving only the capuchins and squirrel monkeys in this family.

Family Cebidae
Subfamily Cebinae (all capuchin monkeys)
Genus Cebus (gracile capuchin monkeys)
Kaapori capuchin (C. kaapori)
Wedge-capped capuchin (C. olivaceus)
White-headed capuchin (C. capucinus)
White-fronted capuchin (C. albifrons)
Genus Sapajus (robust capuchin monkeys)
Black-striped capuchin (S. libidinosus)
Black capuchin (S. nigritus)
Blond capuchin (S. flavius)
Golden-bellied capuchin (S. xanthosternos)
Tufted capuchin (S. apella)
Subfamily Saimiriinae (all squirrel monkeys)
Genus Saimiri (squirrel monkeys)
Bare-eared squirrel monkey (S. ustus)
Black squirrel monkey (S. vanzolini)
Black-capped squirrel monkey (S. boliviensis)
Central American squirrel monkey (S. oerstedi)
Common squirrel monkey (S. sciureus)
Previously, New World monkeys were divided between Callitrichidae and this family. For a few recent years, marmosets, tamarins, and lion tamarins were placed as a subfamily (Callitrichinae) in Cebidae, while moving other genera from Cebidae into the families Aotidae, Pitheciidae and Atelidae. The most recent classification of New World monkeys again splits the callitrichids off, leaving only the capuchins and squirrel monkeys in this family.
Family Cebidae
Subfamily Cebinae (all capuchin monkeys)
Genus Cebus (gracile capuchin monkeys)
Kaapori capuchin (C. kaapori)
Wedge-capped capuchin (C. olivaceus)
White-headed capuchin (C. capucinus)
White-fronted capuchin (C. albifrons)
Genus Sapajus (robust capuchin monkeys)
Black-striped capuchin (S. libidinosus)
Black capuchin (S. nigritus)
Blond capuchin (S. flavius)
Golden-bellied capuchin (S. xanthosternos)
Tufted capuchin (S. apella)
Subfamily Saimiriinae (all squirrel monkeys)
Genus Saimiri (squirrel monkeys)
Bare-eared squirrel monkey (S. ustus)
Black squirrel monkey (S. vanzolini)
Black-capped squirrel monkey (S. boliviensis)
Central American squirrel monkey (S. oerstedi)
Common squirrel monkey (S. sciureus)
Cebidae