_Icterus parisorum_, (“BON. Acad. Bonon. 1836.”)—BP. Pr. Zoöl. Soc. V, 1837, 109.—BAIRD, Birds N. Am. 1858, 544, pl. lvii, f. 1; Mex. B. II, Birds, 19, pl. xix, f. 1.—CASSIN, Pr. 1867, 54.—COOPER, Orn. Cal. 1, 1870, 276. _Xanthornus parisorum_, IB. Conspectus, 1850, 434. _Icterus melanochrysura_, LESSON, Rev. Zoöl. 1839, 105.—_Icterus scotti_, COUCH, Pr. A. N. Sc. Phil. VII, April, 1854, 66 (Coahuila). SP. CHAR. Bill attenuated; not much decurved; tail moderately graduated. Head and neck all round, breast, interscapular region, wings, and tail, black. Under parts generally, hinder part of back to the tail, middle and lesser upper, and whole of lower wing-coverts, and base of the tail-feathers, gamboge-yellow; a band across the ends of the greater coverts, with the edges of the inner secondaries and tertiaries, white. Length, 8.25; extent, 11.75; wing, 4.00; tail, 3.75; tarsus, .95. _Female._ Olivaceous above, the back with obsolete dusky streaks; rump and under parts yellowish, clouded with gray. Tail brownish-olive on upper surface, more yellow beneath; wings with two white bands. HAB. Valley of the Rio Grande; south to Guatemala. In Texas, found on the Pecos. Cape St. Lucas. Oaxaca, winter (SCL. 1858, 303); Orizaba (SCL. 1860, 251); Vera Cruz, temp. and alpine (SUM. M. B. S. I, 553). The bill is slender and attenuated, very little decurved, much less so than in _I. cucullatus_, slenderer and a little more decurved than in _I. baltimore_. The tail is moderately graduated, the outer feather .45 of an inch less than the middle. In this species the black feathers of the neck, except below, have a subterminal bar of yellow; elsewhere it is wanting. The black of the breast comes a little posterior to the anterior extremity of the folded wing. The posterior feathers in the yellow patch on the shoulders are tinged with white. The white in the bar across the ends of the greater coverts is confined mainly to the terminal quarter of an inch of the outer web. In the full plumage, there is only a faint trace of white on the edges of the primaries. The yellow of the base of the tail only extends on the middle feather as far as the end of the upper tail-coverts; on the three outer, it reaches to within an inch and a quarter of the end of the tail. An immature male has the yellow more tinged with green, the black feathers of the head and back olivaceous with a black spot. Specimens vary much in size; the more northern being the larger. _Icterus wagleri_[42] is an allied species found just south of the Rio Grande by Lieutenant Couch, but not yet detected within our limits.