Pithecia, i. [176]
rubicundus, Brachyurus, i. [176]; ii. [255]
Semnopithecus, ii. [128], [131], [249]
rubra, Simia, ii. [63]
rubriventer, Lemur, i. [76]
rueppelli, Guereza, ii. [97]
rueppellii, Gelada, i. [276]
rufescens, Macacus, ii. [11], [249]
Ruffed Lemur, i. [68]
rufibarbata, Pithecia, i. [185]