Pipilo fuscus Tlaxcala, Tlaxcala, Mex. to Otzacaca, Otzacaca, Mex. July 14, 1946 Heavily cultivated. This cultivated land continued all the way in to Otzacaca, at an elevation of about 500 ft. 2 mi. S. of Mitla, 5400 ft., Otzacaca, Mex. July 15, 1946 Drove from Otzacaca to Mitla. The country is a continuous valley, rising about 400 ft over the 30 miles to Mitla. The valley is heavily cultivated almost to the surrounding hills, but at the base of the hills is a broad belt of mesquite and cactus. There are occasional patches of virgin desert even among the corn and maguey fields to show what the nature of the country must have been before cultivation. Brown Towhees were seen in the village of Mitla, but it was obviously impossible to collect there, so we drove 2 mi. back to the main road, and 2 mi. SE along the main road that leads to Tehuantepec. This put us 2 mi. due S. of Mitla. We drove off the main road, and stopped near a corn field. The area is one of scattered corn-maguey fields, with interspersed patches of mesquite scrub and scattered giant candelabra cactus, tiny barrel cactus, and both cholla and tuna cactus were common. Brown Towhees were fairly common, and Sibley