Guadalajara Jalisco, Mex. to Siera de Tafalpa? 7450 ft., Jalisco, Mex. Aug. 3, 1946 Drove from Guadalajara 21 miles to the Autlan turn-off, and 10 miles down the Autlan turn-off to Villa Corona. B. fuscus was noted 1 1/10 mi. E of Villa Corona. The country here is mostly cane-fields sur- rounded by stone walls. From Villa Corona we re- turned to Camino Nacional No 4, and drove 6.3 mi. toward Mexicaltly, to the turn-off leading to Ja- coalco y ciudad Guyman. 7/10 of a mile S of the turn-off B. fuscus was noted. The road leads south along the east shore of Lago de Atotilco, which is a playa, but filled with water at the present time because of the recent heavy rains. The eleve- ion at the turn-off to Jacoalco is 5200 ft., and the road rises a few hundred feet over a small ridge, dropping down to the shore of Lake Atoto- ilco at 4600 ft. 1/6 mi. past the turn-off Brown Towhee were noted. One Brown Towhee was col- lected 2 mi. NE of Jacoalco, 4550 ft. From here on Brown Towhees were noted so frequently that the population may definitely be called continuous. The stretch from the turn-off to Sayula is flat, the elevation at Sayula being 4700 ft. This repre- sents a drop of 500 ft. from the turn-off, and all most of this occurs within the first 4 miles. The Laguna de Sayula lies E of the road, which follows the lakeshore closely. LagunadeSayula