This work is the result of five years' study of the Fauna of Somaliland, made while residing in the Somali country. That it may be of some interest to naturalists, and of use to the sportsman, is the earnest hope and ultimate desire of the author. The Somali country has long been renowned for its peculiar and beautiful Fauna, which, owing to the warlike nature of its inhabitants, has been but slightly studied. There are still immense areas in the Horn of Africa unexplored by the white man which in all probability contain many interesting birds and mammals as yet unknown. My endeavour throughout has been to state as concisely as possible all that is known regarding the mammals of the vast region called Somaliland, and to show how slight our knowledge is concerning them.