Opinions from P. Hershkovitz 1974
- 'Alouatta belongs to Alouattinae'
- 'Alouattinae belongs to Cebidae'
- 'Aotini was reranked as the subfamily Aotinae and belongs to Cebidae'
- 'Aotus belongs to Aotinae'
- 'Ateles belongs to Atelinae'
- 'Atelinae belongs to Cebidae'
- 'Brachyteles belongs to Atelinae'
- 'Branisella belongs to Primates'
- 'Cacajao belongs to Pithecinae'
- 'Callicebinae belongs to Cebidae'
- 'Callicebus belongs to Callicebinae'
- 'Callimico belongs to Callimiconidae'
- 'Callimiconidae belongs to Platyrrhini'
- 'Callithrix belongs to Callitrichidae'
- 'Callitrichidae belongs to Platyrrhini'
- 'Cebidae belongs to Platyrrhini'
- 'Cebinae belongs to Cebidae'
- 'Cebuella belongs to Callitrichidae'
- 'Cebupithecia belongs to Cebupithecinae'
- 'Cebupithecinae belongs to Cebidae'
- 'Cebus belongs to Cebinae'
- 'Chiropotes belongs to Pithecinae'
- 'Dolichocebus belongs to Homunculidae'
- 'Haplorrhini [misspelled as Haplorini] belongs to Primates'
- 'Homunculidae belongs to Platyrrhini'
- 'Homunculus belongs to Homunculidae'
- 'Homunculus harringtoni belongs to Homunculus' according to Rusconi 1933
- 'Homunculus harringtoni is recombined as Tremacebus harringtoni'
- 'Lagothrix belongs to Atelinae'
- 'Leontopithecus belongs to Callitrichidae'
- 'Neosaimiri belongs to Saimiriinae'
- 'Pithecia belongs to Pithecinae'
- 'Pitheciidae [misspelled as Pithecinae] belongs to Cebidae'
- 'Platyrrhini belongs to Haplorini'
- 'Saguinus belongs to Callitrichidae'
- 'Saimiri belongs to Saimiriinae'
- 'Saimiriinae belongs to Cebidae'
- 'Stirtoninae belongs to Cebidae'
- 'Tremacebinae belongs to Cebidae'
- 'Tremacebus belongs to Tremacebinae'
- 'Xenothricidae is corrected as Xenotrichidae and belongs to Platyrrhini'
- 'Xenothrix belongs to Xenotrichidae'