Keywords: Handbook to the Primates Plate 27.jpg Plate XXVII White-crowned Mangabey Cercocebus æthiops 1897 Handbook to the Primates Vol II http //archive org/details/handbooktoprimat02forb Henry Ogg Forbes 1851-1932 Species Plates by John Gerrard Keulemans 1842 “1912 Synonymy from http //www departments bucknell edu/biology/resources/msw3/browse asp id 12100428 Mammal Species of the World on the basis of the vernacular name and Distribution West Africa Forbes' text seems to confuse the synonymy with that of Chlorocebus aethiops L PD-old-auto-1923 1912 Handbook to the Primates Cercocebus atys |