Opening ParagraphThis paper explores the nature of ethnic identity in the small town of Guider in northern Cameroon. It focuses on the process of ethnic identity change, specifically upon the incorporation into the Fulbe (sing. Pullo) ethnic group of individuals who originate outside it. Ethnic group change of this kind is not unknown in Africa (see Little, 1951; Richards, 1954; Banton, 1957; Wallerstein, 1960; Burnham, 1972; Salamone, 1975; Nicolas, 1975; Vaughan, 1981). The data in this study contribute to a growing body of literature concerned with ethnic boundary crossing, but, I shall argue, they suggest that we re-examine certain widely held assumptions about ethnicity and the process of ethnic assimilation.