_Motacilla chrysoptera_, LINN. S. Nat. I, 1766, 333. _Sylvia chr._ LATH.—WILS. Am. Orn. II, pl. xv. fig. 5.—BON. _Sylvicola chr._ BON. _Helinaia chr._ AUD. Birds Am. II, pl. cvii. _Helmitherus chr._ BON.—SCLATER, P. Z. S. 1855, 143 (Bogota). _Helminthophaga chrysoptera_, CAB. Mus. Hein.; Journ. f. Orn. 1860, 328 (Costa Rica).—BAIRD, Birds N. Am. 1858, 255; Rev. 175.—SCLATER & SALVIN, Ibis, II, 1860, 397 (Choctum, Guatemala).—SALVIN, 1867, 135.—DRESSER, Ibis, 1865, 477 (San Antonio).—LAWRENCE, Ann. N. Y. Lyc. VII, 1861, 293 (Panama).—GUNDL. Cab. Journ. 1861, 326 (Cuba, rare). _Motacilla flavifrons_, GMELIN. _Sylvia flavifrons_, LATH. [Illustration: _Helminthophaga celata._] SP. CHAR. Upper parts uniform bluish-gray; the head above and a large patch on the wings yellow. A broad streak from the bill through and behind the eye, with the chin, throat, and forepart of the breast, black. The external edge of the yellow crown continuous with a broad patch on the side of the occiput above the auriculars, a broad maxillary stripe widening on the side of the neck, the under parts generally, with most of the inner webs of the outer three tail-feathers, white; the sides of the body pale ash-color. _Female_ similar, but duller. Length about 5 inches; wing, 2.65; tail, 2.25. HAB. Eastern Province of United States, San Antonio (DRESSER); Cuba (rare); Guatemala; Costa Rica; Panama; Bogota. Recorded in West Indies from Cuba only; not from Mexico. Veragua; Chiriqui (SALVIN). HABITS. So far as our present knowledge of this Warbler extends, it is nowhere a common species, and is distributed over a comparatively small extent of territory. Wilson met with it in Pennsylvania during the last of April and the first of May, believing it to be only a migrant species on its way to more northern regions. Nuttall was sceptical of these conclusions, as he never met with the species in the New England States. Audubon observed these birds in their migrations through Louisiana, which State they entered from Texas in the month of April. He procured several specimens in Louisiana and Kentucky, and one in New Jersey. He knew nothing as to its breeding, and seems to have accepted Wilson’s inferences in regard to its northern migrations. He never met with this bird in the fall, when, if a Northern species, it should be returning south, and thence inferred that it migrated by night.