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Show 250 MR. P. L. SCLATER ON THE [Mar. 14, Patas (Simia rubra), F. Cuv. Hist. Nat. Mamm. i. pi. 25 Chlorocebus ruber, Gray, Cat. Monk. B. M. p. 25 (1870). Hab. West Africa: Senegal (Mus. Lugd.). _ _ The Patas is subject to a certain amount of individual variation, aud I was at one time of opinion that it might be possible to distinguish two forms of this species (cf. P. Z. S. 1874, p. 664). It is much more common in captivity than the Nisnas. 17. CERCOPITHECUS PYRRHONOTUS. Cercopithecus pyrrhonotus, Hempr. et Ehr. Symb. Phys. pi. Geoffr. Diet. univ. d'Hist, nat. iii. p. 307; Wagn. Saug. v. p. 42 Sci. P. Z. S. 1871, p. 623; id. List Vert. (1883) p. 8; Schleg. Mus. P.-B. Sim, p. 84. Cercopithecus ruber, Riipp. Neue Wirbelth. p. 8. Nisnas, F. Cuv. Hist. Nat. Mamm. i. pi. 27 (1830). Hab. Kordofan and Darfour (Buppell); Somaldand (Soc. Zool. Viv.). W e have received altogether seven examples of the Nisnas, which is quite distinct from the Patas when seen alive. A fine male, presented Sept. 29th, 1882, by Mrs. F. Dixon, was stated to have been brought from Somaliland. Sect. D. Cercopitheci melanochiri. The nine species referred to this section, all of which have the arms and legs black or dark cinereous, may be diagnosed as follows:- A. Pectore albo. a. Striga femorali alba 18- mono. b. Striga femorali nulla. f D orso toto concolore; ano rufo 19. albigularis. \ Dorso postico cum ano nigro 20. campbelh. B. Pectore cinereo. c. Maculis auricularibus nullis. f Dorso concolore 21. samango. \ Dorso postico brunneo 22. moloneyi. d. Macula utrinque ad aures rubra 23. stairsi. C. Pectore rubro 24. erythrog aster. D. Pectore nigro. Striga femorali alba; fronte nigro 25. neglectus. Striga femorali nulla; fronte albo cincta 26. leucampyx. 18. CERCOPITHECUS MONA. Simia mona, Schreb. Siiug. i. p. 97, t. xv. (1775). Cercopithecus mona, Erxl. Syst. Reg. An. p. 32 (1777); Martin, M. An. p. 527 ; Wagn. Saug. Suppl. v. p. 47 (1855); Gray, P. Z. S. 1868, p. 182; id. Cat. Monk. B. M. p. 22 (1870); Sci. List Vert. (1883) p. 9; Schleg. Mus. P.-B. vii. p. 80 (1876). Mone (Cercopithecus mona), F. Cuv. Hist. Nat. Mamm. i. pi. (1819). Hab. West Africa: Cameroons (Mus. Lugd.). The Mona is easily recognized by the white patch on the thighs, on each side of the tail, and the white band on the forehead. It |