[Illustration: FIG. 1. Panoramic view of Lake PAitzcuaro.]
[Illustration: FIG. 2. Stuffed skins, in dorsal view, of 6
males of _Mephitis macroura macroura_, all trapped within
a radius of 5 miles of PAitzcuaro, to show the amount of
individual variation in color-pattern. A--1/10. Photo by
W. C. Matthews.]