Lophocebus (Palmer, 1903) . Science, N.S., 17:873.

TYPE SPECIES: Presbytis albigena Gray, 1850 .

SYNONYMS: Cercolophocebus Matschie, 1914; Semnocebus Gray, 1870 .

COMMENTS: Formerly included in Cercocebus; a subgenus of Cercocebus, according to Szalay and Delson (1979), but see Groves (1979).