PROCEEDINGS OF THE UNITED STATES NATIONAL MUSEUM issued \miVsJX, Q^W^ hy (he SMITHSONIAN INSTITUTION U. S. NATIONAL MUSEUM Vol. 106 Washington : 1956 No. 3377 MAMMALS OF THE ANGLO-EGYPTIAN SUDAN By Henry W. Setzer Introduction The discovery of factors of medical importance in mammals of the southern Anglo -Egyptian Sudan prompted this study of their taxon-omy, distribution, and zoogeography. The mammalian hosts obtained on a preliminary investigation in 1948 and subsequent studies in 1949-1950 form the basis of the present report. The material was obtamed by personnel of U. S. Naval Medical Research Unit Number Three, and it currently bears Chicago Natural History Museum catalog numbers. This collection is to be divided equally between the Chicago Museum and the United States National Aluseum. Thus, unless otherwise indicated, specimens from localities bearing no museum abbreviation in the "specimens ex-amined" sections of the accounts of species are in the above collection. Specimens from localities such as Bor, Gondokoro, Khartoum, Lake No, and Mongalla, which bear no museum designation, are in the U. S. National Museum from previous African explorations. Locali-1 This paper is based upon studies of the material collected by U. S. Naval Medical Research Unit Number Three. The author is a collaborator with this research group. 447