rostratum, i. 121; ii. 252 torquata, Callithrix, i. 159, 161; ii. 255 torquatus, Cebus, i. 159 Callithrix, i. 159, 161 tournesarti, Plesiadapis, i. 118; ii. 242 trarensis, Macacus, ii. 213, 243 Tree-walkers, ii. 148 trepida, Simia, i. 211 trichotis, Chirogale, i. 9, 52 Chirogaleus, i. 52 trivirgatus, Aotus, i. 168 Nyctipithecus, i. 168; ii. 255 Troglodytes, ii. 180, 187, 188 aubryi, ii. 194 calvus, ii. 199 gorilla, ii. 180 kooloo-kamba, ii. 199 leucoprymnus, ii. 194 mimetes, ii. 194 niger, ii. 194 savagei, ii. 180 schweinfurthi, ii. 194 tchego, ii. 195 vellerosus, ii. 194 troglodytes, Anthropopithecus, ii. 194, 195, 196, 199, 200, 201, 202 Mimetes, ii. 199 Simia, ii. 194 Tropicolobus rufomitratus, ii. 88 tschudii, Lagothrix, i. 222 tuberifer, Eriodes, i. 226, 227 Tufted Capuchin, i. 212 Tufted-eared Guenons, ii. 44 tutus, Pelycodus, i. 122; ii. 252 typicus, Cheirogaleus, i. 50, 51 Uakarí, Bald, i. 177 Black-headed, i. 175 Uakarí Monkeys, i. 174, 248 Red, i. 176 unicolor, Cebus, i. 209, 217 ursina, Alouatta, i. 198; ii. 210, 255, 256 Stentor, i. 193, 198 Ursine Guereza, ii. 93 Ursine Langur, ii. 122 ursinus, Colobus, ii. 93, 94, 95, 245 Cynocephalus, i. 263 Guereza, ii. 94 Mycetes, i. 198 Presbytis, ii. 122, 123 Semnopithecus, ii. 114, 122, 250 Stentor, i. 198 ursula, Hapale, i. 148 ursulus, Midas, i. 140, 147, 148, 149; ii. 255 usta, Chrysothrix, i. 154; ii. 255, 256 Saimiris, i. 154 Van Beneden's Guereza, ii. 87 Varecia, i. 65 nigra, i. 69 Variegated Capuchin, i. 211 Spider-Monkey, i. 221, 231 variegatus, Ateles, i. 231, 233; ii. 255 Cebus, i. 210, 211, 213; ii. 256 Hylobates, ii. 152, 160 Indris, i. 107 Pithecus, ii. 159 Simia, ii. 160 varius, Lemur, i. 68 Pithecus, ii. 159 vellerosus, Ateles, i. 128, 129, 236, 244; ii. 254 Cebus, i. 208, 217; ii. 256 Colobus, ii. 94, 95, 245 Guereza, ii. 95 Pterycolobus, ii. 95 Semnopithecus, ii. 94 Troglodytes, ii. 194 verreauxi, Propithecus, i. 100, 102, 286 Verreaux's Sifaka, i. 100 versicolor, Cebus, i. 213, 215 verus, Colobus, ii. 87, 245 Procolobus, ii. 88 Vervet Guenon, ii. 60 veter, Cercopithecus, ii. 18 Silenus, ii. 19 Simia, ii. 113 vetulus, Cercopithecus, ii. 112 vicarius, Hyopsodus, i. 123; ii. 252 vidua, Saguinus, i. 159 villosa, Alouatta, i. 199 villosus, Mycetes, i. 128, 199; ii. 254 vociferans, Nyctipithecus, i. 129, 169, 170 Von der Decken's Sifaka, i. 101 vulgaris, Jacchus, i. 132