Order Primates Author Colin P. Groves text 1993 Smithsonian Institution Press Washington and London Editor Don E. Wilson Editor DeeAnn M. Reeder Mammal Species of the World (2 nd Edition) 243 277 book chapter 193461 10.5281/zenodo.7353122 0df816bd-0cef-463a-94c2-b03e13ea7128 1-56098-217-9 7353122 Procolobus preussi (Matschie, 1900) . Sitzb. Ges. Naturf. Fr. Berlin, 1900:183 . TYPE LOCALITY: Cameroon , Barombi (on Elephant Lake) . DISTRIBUTION: Yabassi Dist. ( Cameroon ). STATUS: CITES - Appendix II; U.S. ESA and IUCN - Endangered. COMMENTS: Subgenus Piliocolobus . Considered by Rahm (1970) to be a subspecies of badius , but see Dandelot (1974:37) .