Hab. From northern border of Mexico to Isthmus of Panama, especially on west side.
This species has not yet been recorded as taken within the limits of the United States, but it comes so near to our southern border that it doubtless sometimes crosses the line. Nothing distinctive appears to be known of its habits.
Vireosylvia philadelphicus, Cassin.
PHILADELPHIA GREENLET.
Vireosylvia philadelphica, Cassin, Pr. A. N. Sc. V, Feb. 1857, 153.—Ib. VI, pl. i, fig. 1 (Philadelphia).—Sclater & Salvin, Ibis, I, 1859, 12 (Guatemala).—Baird, Rev. Am. Birds, 340. Vireo philadelphicus, Baird, Birds N. Am. 1858, 335, pl. lxxviii, fig. 3. Vireosylvia cobanensis, Sclater, P. Z. S. 1860, 463 (Coban).—Ib. Ann. Mag. N. H. 1861, 328.
V. philadelphicus.
4364
Sp. Char. (No. 20,643 ♂.) Above dark olive-green, tinged with plumbeous-ash except on the rump; top of head and nape purer plumbeous-ash, not edged with dusky, the line of demarcation indistinct. Beneath light sulphur-yellow, paler and almost white on chin and middle of abdomen; sides more olivaceous. A whitish stripe from bill over eye, as also a patch beneath it and the eyelids. A dusky loral and post-ocular spot. Quills and rectrices brown, edged externally with olive, internally with whitish; the larger coverts with paler outer edges. Bill blackish, paler plumbeous below. Legs plumbeous. Spurious outer or first quill (seen in gilva) wanting; the outer about equal to fifth; third longest; second and fourth not much shorter. Total length, 4.80; wing, 2.60; tail, 2.25.
Hab. Eastern North America to Hudson’s Bay and Maine, south (in winter) to Costa Rica and Guatemala. Veragua (Salvin). Not recorded from Mexico or West Indies.
Specimens vary somewhat in purity of tints, and especially in intensity of yellow of under parts, which color is deeper in autumnal skins.