Hispanic-American societies of the colonial period are traditionally described as being hierarchized along a system of racial classification. Indeed, the Spanish term casta has been translated as race for that very purpose. Considering both terms as synonymous, however, leads to a conflation of colonial categories and contemporary concepts, thus simplifying a highly complex and lengthy process.
This article focuses on the distinctly colonial elements that contributed to transforming a notion derived from nobiliary terminology into a science of phenotypes. The study of this visual culture and vocabulary, initially rooted in Mesoamerica, reveals the regional and interimperial dialogue that established a Euro-American space of shared conceptual creation.