The term Mauss's areas refers to segmentation of the cerebral cortex on the basis of myeloarchitecture as described by Mauss in 1908. The legend to the summary map in Mauss-1908 attributes the areas simply to Cercopithecus. He studied, however, representatives of three monkey species including one guenon (Cercopithecus) and two macaques (Macaca fascicularis and Macaca mulatta). Furthermore, most of the pen and ink drawings of the internal structure of various areas, which he credited to one Fraeulein Schellbach, were based on Macaca mulatta. Mauss referenced the areas by names and numbers corresponding to the labels assigned by Brodmann to topologically similar areas, which Brodmann had defined on the basis of cytoarchitecture ( Brodmann-1905 ). Like Brodmann, Mauss mapped a portion of areas hidden in the banks of sulci, e.g., area 3 of Mauss, onto the adjacent, visible surface. Thus, some areas appear larger on his surface map than on maps by other authors, e.g., area 3 of Vogts.