Theropithecus, i. [278]

occidentalis, Colobus, ii. [98]

Guereza, ii. [97]

ochraceus, Cercopithecus, ii. [65]

ocreatus, Macacus, ii. [12]

ochrocephala, Pithecia, i. [185]

Œdipus geoffroyi, i. [140]

titi, i. [140]

œdipus, Hapale, i. [140]

Midas, i. [139], [140]; ii. [254]