II. PITHECIA, Geoffr. 182 1. monachus, Humb. and Bonpl. 182 2. pithecia (Linn.) 185 3. satanas (Hoffm.) 186 4. chiropotes (Humb.) 187 5. albinasa, Is. Geoffr. 188 SUB-FAMILY MYCETINÆ 189 I. ALOUATTA, Lacép. 192 1. seniculus, Linn. 192 2. nigra (Geoffr.) 195 3. beelzebul (L.) 197 4. ursina (Humb.) 198 5. villosa (Gray) 199 6. palliata (Gray) 202 SUB-FAMILY CEBINÆ 204 I. CEBUS, Erxl. 204 1. hypoleucus (Humb.) 207 2. lunatus, F. Cuv. 208 3. flavus, Geoffr. 208 4. monachus, F. Cuv. 209 5. fatuellus (Linn.) 211 6. variegatus, Geoffr. 211 7. cirrifer, Geoffr. 212 8. robustus, Kuhl. 212 9. annellatus, Gray 213 10. albifrons (Humb.) 213 11. capucinus (Linn.) 215 12. vellerosus, Is. Geoffr. 217 13. flavescens, Gray 217 14. chrysopus, F. Cuv. 218 15. subcristatus, Gray 218 16. capillatus, Gray 219 17. azaræ, Rennger 219 18. fallax, Schl. 220 II. LAGOTHRIX, Geoffr. 220 1. lagothrix (Humb.) 222 2. infumatus (Spix) 223 III. BRACHYTELES, Spix 224 1. arachnoides (Geoffr.) 226 IV. ATELES, Geoffr. 227 1. variegatus, Wagner 231 2. geoffroyi, Kuhl 233 3. rufiventris, Scl. 236 4. paniscus (Linn.) 237 5. marginatus, Kuhl 239 6. ater, F. Cuv. 241 7. grisescens, Gray 242 8. fusciceps, Gray 242 9. cucullatus, Gray 243 10. vellerosus, Gray 244 FAMILY CERCOPITHECIDÆ 249 SUB-FAMILY CERCOPITHECINÆ 252