110. 7. Helinaia peregrina, Wils. Tennessee Swamp-Warbler. Plate CLIV. Male. Bill shorter than the head, straight, very acute; wing with the second and third quills longest; tail nearly even. Upper parts yellowish-olive, the head darker; lower parts cream-coloured, fading behind into white; a pale yellow line over the eye; quills and tail-feathers dusky, the primaries margined with whitish, the secondaries with greenish-yellow. _Male_, 4-1/2, 8. Florida to New York, and in the interior to Kentucky. Rare. Migratory. Tennessee Warbler, Sylvia peregrina, Wils. Amer. Orn. v. iii. p. 83. Sylvia peregrina, Bonap. Syn. p. 87. Tennessee Warbler, Sylvia peregrina, Nutt. Man. v. i. p. 412. Tennessee Warbler, Sylvia peregrina, Aud. Orn. Biog. v. ii. p. 307. 111. 8. Helinaia solitaria, Wils. Blue-winged Yellow Swamp-Warbler. Plate XX. Male and Female. Bill shorter than the head, straightish, very acute; wings with the outer four quills almost equal, the second longest; tail nearly even. Forehead, crown, and lower parts bright yellow; hind part of the head, neck, and back light green, rump greenish-yellow; lore black; wings and tail greyish-blue, the feathers margined with greyish-white; two bands of white on the wing, formed by the tips of the first row of small coverts and the secondary coverts; tail-feathers, except the middle, with a patch of white on the inner web. Young with the upper parts, including the forehead, yellowish-green, the lower pale greenish-yellow. _Male_, 4-3/4, 7. From Texas to Massachusetts. In the interior, to Kentucky. Rather rare. Migratory. Blue-winged Yellow Warbler, Wils. Amer. Orn. v. ii. p. 109. Sylvia solitaria, Bonap. Syn. p. 87. Blue-winged Yellow Warbler, Sylvia solitaria, Nutt. Man. v. i. p. 410. Blue-winged Yellow Warbler, Sylvia solitaria, Aud. Orn. Biog. v. i. p. 102. 112. 9. Helinaia celata, Say. Orange-crowned Swamp-Warbler. Plate CLXXVIII. Male and Female. Bill shorter than the head, very much attenuated; wings with the outer four quills almost equal, the second longest; tail even. Male with the upper parts dull green, the rump yellowish-green; a patch of dull reddish-orange on the crown, concealed by the grey tips of the feathers; lower parts dull olivaceous yellow; lower tail-coverts light yellow; quills and tail-feathers greyish-brown, edged with yellowish-green. Female similar, with the orange on the crown duller. Young with the lower parts paler, and without red on the head. This species and the next seem to form the transition from the Sylvicolinæ to the Reguli, as _Mniotilta varia_ does to the Certhiæ. _Male_, 5-1/2, 7-11/12. In summer from Texas to Nova Scotia. Winters in the southern states. Columbia River. Rather common. Sylvia celata, Say, Long's Exped. v. i. p. 169. Sylvia celata, Bonap. Syn. p. 38. Orange-crowned Warbler, Sylvia celata, Bonap. Amer. Orn. v. i. p. 45.