A considerable collection of mammalian bones obtained by the officers of the Egyptian Geological Survey, and sent to England by Captain H. Lyons for determination, proves to contain a number of specimens of great interest. The remains unfortunately are, for the most part, very fragmentary and in many cases quite indeterminable, but they are still sufficient to indicate the existence in Northern Egypt of several distinct mammalian faunas, the oldest being of Lower Miocene age, the most recent probably late Pleistocene and including species now living in the Nile Valley.