Order Artiodactyla Author Wilson, Don E. Author Reeder, DeeAnn text 2005 The Johns Hopkins University Press Baltimore Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 1 637 722 book chapter 0-8018-8221-4 10.5281/zenodo.7316519 Addax nasomaculatus (de Blainville 1816) [Cerophorus] nasomaculata de Blainville 1816 , Bull. Sci. Soc. Philom. Paris, 1816: 75 . Type Locality: No locality given. Here selected as the Tunisian Sahara. Vernacular Names: Addax . Distribution: Extinct in Algeria , Egypt , Libya , Morocco , Tunisia , and probably Sudan . Vagrants still enter Algeria and Sudan . Survives in Chad , N Mali , Mauritania , and Niger . Conservation: Nearly extinct in wild ( East, 1990 ). CITES – Appendix I; U.S. ESA – Proposed Endangered; IUCN – Critically Endangered. Discussion: The syntypes were observed by de Blainville in Bullock's Pantherion or Museum and the Museum of the Royal College of Surgeons, both in London, UK . C. H. Smith (1827) suggested the specimens came from Guinea or Western Africa; Lydekker (1914 b :148) stated that the type locality was probably Senegambia. These authors provided no evidence to support their conclusions and from the discussion in Sclater and Thomas (1898), it seems more probable that British hunters or collectors obtained Addax from the Tunisian Sahara, to which the type locality is here restricted.