JESimpson, 1938. Odocoileus couesi 2400±ft., Sierra de Mazatan (E. slope), 6 mi. N. Nacori, Sonora. May 20, 1938. Picked up skull (399) only from post-rotten, much-scattered carcus of small white-tail among granite rocks in grass, heavy brush, and trees. A mile± south of above-mentioned mt. slope in dry-grass glade was surprised (missed three shots) by three antlerless white-tails — large (100±lbs) and a medium (75±lbs.) together and a small (50±lbs.) one 20 yards from pair. They ran swiftly and smoothly without the high bounding run of the black-tails of California. The light tan color blend- ed well into the dry-yellow-grass ground-color. On the way to the mountain an hour or so earlier (about dawn) caught a brief glimpse and a tail flash of a deer in the jungle-brush of the foothills. (cf. General Notes (account) pp. 79-80 for notes of Mexican farmer method of deer control.)