Abstract
If European metropolises witnessed the development, throughout the 19th century, of various forms of concentrationary assistance and radical isolation through penal colonies, colonial space was the site of an even more explicit formulation and experimentation with the creation and the exclusion of of an undesirable human surplus, notably in South Asia, where the social system of castes could provide powerful ideological foundations for the colonial thinking on exclusion. This article seeks to illustrate this by examining the creation of the category of « criminal tribes » in India, during the last third of the 19th century