Simias Miller 1903
Simias Miller 1903, Smithson. Misc. Coll., 45: 67.
Type Species: Simias concolor Miller 1903
Species and subspecies: 1 species:
Species Simias concolor Miller 1903
Discussion: Included in Nasalis by Groves (1970:639); Szalay and Delson (1979) and Delson (1975:217) considered Simias a subgenus; but also see Krumbiegel (1978) and Napier (1985), who restored it to generic rank.