The shift away from viewing colonial elites as homogeneous communities of common interest marks an important trajectory in the anthropology of empire, signaling a major rethinking of gender relations within it. More recent attention to the internal tensions of colonial enterprises has placed new emphasis on the quotidian assertion of European dominance in the colonies, on imperial interventions in domestic life, and thus on the cultural prescriptions by which European women and men lived (Callan and Ardener 1984;Knibiehler and Goutalier 1985;Reijs, et. al 1986; Callaway 1987;Strobel 1987). Having focused on how colonizers have viewed the indigenous Other, we are beginning to sort out how Europeans in the colonies imagined themselves and constructed communities built on asymmetries of race, class and gender-entities significantly at odds with the European models on which they were drawn.These feminist attempts to engage the gender politics of Dutch, French and British imperial cultures converge on some strikingly similar observations; namely that European women in these colonies experienced the cleavages of racial dominance and internal social distinctions very differently than men precisely because of their ambiguous positions, as both subordinates in colonial hierarchies and as active agents of imperial culture in their own right. Concomitantly, the majority of European women who left for the colonies in the late 19th and early 20th centuries confronted profoundly rigid restrictions on their domestic, economic and political options, more limiting than those of metropolitan Europe at the time and sharply contrasting the opportunities open to colonial men.In one form or another these studies raise a basic question: in what ways were gender inequalities essential to the structure of colonial racism and imperial authority? Was the strident misogyny of imperial thinkers and colonial agents a byproduct of received metropolitan values ("they just brought it with them"), a reaction to contemporary feminist demands in Europe ("women need to be put back in their breeding place"), or a novel and pragmatic response to the conditions of conquest? Was the assertion of European supremacy in terms of patriotic manhood and racial virility an expression of imperial domination or a defining feature of it?With sustained challenges to European rule in African and Asian colonies in the early 20th century, sexual prescriptions by class, race and gender became increasingly central to the politics of rule and subject to new forms of scrutiny by colonial states. Focusing on the Netherlands lndies and French Indochina, but drawing on other contexts, this article examines how the very categories of "colonizer" and "colonized" were increasingly secured through forms of sexual control which defined the common political interests of European colonials and the cultural investments by which they identified themselves. The metropolitan and colonial discourses on health, "racial degeneracy," and social reform from this period reveal how sexual sa...