remensis, Plesiadapis, i. [118]; ii. [241]

rheso-similis, Macacus, ii. [20]

rhesus, Macacus, ii. [20], [21], [22], [25], [26], [27], [28], [29], [248], [249]

Simia, ii. [22]

Rhinoceros tichorhinus, ii. [218]

Rhinopithecus, ii. [140]

Rhinopithecus roxellanæ, ii. [139]

Ring-tailed Lemur, i. [76]

robustum, Menotherium, i. [121]

robustus, Cebus, i. [129], [212]; ii. [256]