In a Previous article in American Antiquity I have outlined the four main divisions of Maya history: the formative period (prior to A.D. 320); the Initial Series period, which is the classical age (A.D. 320–900); the Mexican period (A.D. 987–1204); and the Mexican absorption period (A.D. 1204–1540). I have also sketched briefly the three provinces into which the Maya area can be rather readily divided.1 Nevertheless, it is difficult to place exactly the boundary between the central and northern areas. I have included in the former the various sites of southern Campeche—such as Calakmul—which are culturally a part of the Peten, and which appear to have been abandoned at the close of the Initial Series period.