Among Dr. Heermann’s notes, quoted by Mr. Dresser, is one containing the statement that he found this species not rare on the prairies near the Medina River, in Texas, where it breeds. Mr. Dresser also states that when at Howard’s Ranche, early in May, he found this bird by no means uncommon. He confirms Dr. Heermann’s account, that it is easily distinguished as it rises in the air, from a bush, with a peculiar fluttering motion of the wings, at the same time singing, and then suddenly dropping into the bushes again. He adds that, in his absence, Dr. Heermann procured the eggs of this species on the Medina, and while he was himself travelling in July towards Loredo, he found a nest which he was fully confident belonged to this bird. It was placed in a low bush not above a foot from the ground, and in its construction resembled that of the _Poospiza bilineata_. The eggs were three in number, pure white, closely agreeing with those taken by Dr. Heermann, and larger and more elongated than those of the _bilineata_. An egg of this species, taken in Texas by Dr. H. R. Storer, the identification of which, however, was incomplete, is more oblong than the eggs of _P. æstivalis_, and smaller, measuring .72 by .58 of an inch. It is pure white also. Peucæa ruficeps, BAIRD. RUFOUS-CROWNED SPARROW. _Ammodromus ruficeps_, CASSIN, Pr. A. N. Sc. VI, Oct. 1852, 184 (California).—IB. Illust. I, v, 1854, 135, pl. xx. _Peucæa ruficeps_, BAIRD, Birds N. Am. 1858, 486.—COOPER, Orn. Cal. 1, 1870, 218. SP. CHAR. Above brownish-ashy. The crown and nape uniform brownish-chestnut, the interscapular region and neck with the feathers of this color, except around the margins. A superciliary ashy stripe, whiter at the base of the bill. Beneath pale yellowish-brown, or brownish-yellow, darker and more ashy across the breast and on the sides of body; middle of belly and chin lighter; the latter with a well-marked line of black on each side. Edge of wing white. Under tail-coverts more rufous. Legs yellow. Length, 5.50; wing, 2.35; tail, 2.85. HAB. Coast of California, to Mexico; ? Oaxaca, March (SCL. 1859, 380); ? Vera Cruz, temperate region; resident (SUM. M. B. S. I, 552). This plainly colored species has the bill rather slender; tail rather long, and considerably rounded; the outer feathers .40 of an inch shorter than the middle; the feathers soft, and rounded at the tip. The wing is short; the primaries not much longer than the tertials; the second, third, fourth, and fifth nearly equal; the first scarcely longer than the secondaries.