THE LAND use pattern of nomads appear to vary greatly in different ecologic circumstances, and are generally poorly understood. The present paper describes the pattern developed in Pars province of South Persia, involving the nomad tribes in migrations of considerable distances, and explores the ecologic and demographic implications of this pattern. It also suggests a solution to the incidental cartographic problem of showing the locations of nomadic tribesin the South Persian area. The Basseri tribe, among whom the author spent three months in the spring of 1958, will serve as example in the following treatment.