Journal Hafer, M.S. 1977 6.5 km. S Patzcuaro, 2200 m., Michoacan, Mexico. 28 July (cont.) and Pappogeomys showed a slight tendency to habitat segregate, but this was not always apparent. It seemed to me that the Thomomyss were most often (although not always) in coarser soils and in areas nearer to the woods. The Pappogeomys were almost exclusively in the larger meadows. There was no difficulty telling the two mound types apart, the Pappogeomys had very large mounds, and the Thomomyss, very small. (The size of the Thomomyss specimens was also unusually small -- see Catalogue). Habitat segregation or not, Thomomyss and Pappogeomys were captured side by side and were in almost every sense of the word - Sympatric. 1800 we decided to leave our 7 sets out for the night. We then set out 100 Sherman traps, so in the mesic canyon just to the west of our gopher trapping area and so on the somewhat dryer hillside to the east of the highway. We drove into town, had a very nice dinner -- met an old man from Monterrey, Nuevo Leon -- talked for awhile, then we drove back out to the trapping locality and slept. Very moist, cold night.