Lophocebus albigena (Gray, 1850) . Proc. Zool. Soc. Lond., 1850:77.

TYPE LOCALITY: Zaire, Mayombe .

DISTRIBUTION: SE Nigeria, Cameroon, Congo Republic, Gabon, Equatorial Guinea, NE Angola, Central African Republic, Zaire, W Uganda, Burundi, W Kenya, W Tanzania.

STATUS: CITES - Appendix II; IUCN - Insufficiently known as Cercocebus aterrimus .

SYNONYMS: aterrimus; coelognathus Matschie, 1914; congicus Sclater, 1900; hamlyni Pocock, 1906; ituricus Matschie, 1913; jamrachi Pocoe, 1906; johnstoni Lydekker, 1900; mawambicus Lorenz, 1917; opdenboschi; osmani Groves, 1978; rothschildi Lydekker, 1900; ugandae Matschie, 1913; weynsi Matschie, 1913; zenkeri Schwarz, 1910 .

COMMENTS: Includes aterrimus and opdenboschi; see Groves (1978b), but see also Szalay and Delson (1979).