27. Repila fuscus 31 mi. N of Oaxaca, 7550 ft, Oaxaca, Mex. July 17, 1946 Altitude is 7500 ft. 57 mi. North of Oaxaca, the altitude is 7000 ft, and the country is predom-inantly oak-pine. Although we looked care-fully for Brown Towhees along the roadside, we saw none. Between Nochistlan (Nochistlan) and Tamazulapan, several Brown Towhees were seen, and Iibly shot one from the truck at a point 9 mi. South of Tamazulapan, 7100 ft, Oaxaca, Mex. This specimen is not rutilus, but appears to be fotosimus. In other words, The range crossing the Oaxaca Valley 23 mi N of Oaxaca acts as a barrier to rutilus. The ter- rain where the fotosinus (?) was collected is an open, arid valley, with maguey, some mesquite, and other shrubs. Cactus growth is virtually non-existent. Mexico, D.F. to La Venta, D.F. July 25, 1946 Drove SW of the city about 15 miles on the Toluca road to La Venta, looking for a place to hunt Brown Towhees. The country all the way up to the fir-pine belt at 10,000 ft is so well settled that we could find only one hillside of maguey-bordered cornfields, at 9000 ft, that was far enough from a settlement to be worked without interference. Brown Towhees were seen all the