118 Basileuterus belli Oct. 21 El Batel, 5100 feet, Sinaloa A small, warbler-like passerine was observed briefly, but at a distance of [illegible] thickets only 5 feet or so, along a stream high up above camp. The dorsum was yellowish green, the venter yellow with faint streaks; the crown and sides of the head were red, with a yellow superciliary line. In action, this species suggested Melospiza melodia; it had the general proportions of the latter but was only about 3/4 its size. Its call note, given frequently, was a protracted, uneven squeak.