6 mi. N of Pachuca, 9600 ft., Hidalgo, Mex. July 3, 1946 Away to the south. At 9000 ft. a second, smaller ridge was crossed, and the small town of Zerezo could be seen about 200 ft. below. This town lies at the base of three slopes which converge to form a ca- sin. The east facing slope is bare, weathered gravel with scattered patches of scrub juniper, and scattered pines and short grass cover along the crest. The south facing slope has scattered patches of scrub juniper and Baccharis, and a sparse grass cover. The soil is thin, and there are many rocky outcrops. The west facing slope is similar to the south- facing slope, save that there are a few more corn- fields on the lower slope. The morning's hunting is summarized in the species account of this date for L. fuscus. I headed up mountain toward camp at about 11:45 a.m., and got completely lost on the way back, arriving at camp at about 3 p.m. During the course of my aimless wande- rings shot a P. maculatus close to camp. Birds other than L. fuscus seen below 9300 ft.: Canyon Wren, very common on the arid, rocky slopes. Se- veral birds could be heard singing at one time. Canyon Wren, I seen, one of which was singing. bird. Green-backed Goldfinch - abundant in all types of habitat. Hylorchis (Lancotis?) abundant wherever there were any extensive patches of