Keywords: The book of antelopes (1894) Hippotragus niger II.png en Hippotragus niger Sclatter P L Thomas O The Book of Antelopes vol 4 “ London 1899 “1900 Pl LXXX http //www biodiversitylibrary org/item/132844 page/50/mode/1up Reprint in the Biodiversity Heritage Library Gottlob Heinrich Leutemann 1824 “1905 1899 “1900 PD-100 The book of antelopes Hippotragus niger |