Description.—Above pale earthy brown; forehead and slightly crested crown rufous brown; wings blackish, edges of outer webs of all the wing-feathers and basal part of the secondaries chestnut; tail clear brown; beneath paler, earthy brown; bill and feet horn-colour: whole length 6·0 inches, wing 2·2, tail 3·1.

Hab. Bolivia and N. Argentina.

This species, discovered by d’Orbigny in Bolivia, was met with by White in Catamarca, “on the slopes of the hills, outside the dense wood,” and by Prof. Burmeister near Paraná.

[191.] SYNALLAXIS FRONTALIS, Pelz.
(BROWN-FRONTED SPINE-TAIL.)

Synallaxis frontalis, Scl. et Salv. Nomencl. p. 63; Scl. P. Z. S. 1874, p. 8; Salvin, Ibis, 1880, p. 358 (Salta); White, P. Z. S. 1882, p. 611 (Salta, Catamarca). Synallaxis ruficapilla, d’Orb. Voy., Ois. p. 246 (Corrientes); Burm. La-Plata Reise, ii. p. 408 (Paraná).

Description.—Above, earthy brown; cap chestnut; front earthy brown; wing-coverts chestnut, wing-feathers olive-brown, the outer webs edged with chestnut; tail chestnut; beneath, throat blackish, with slight whitish mottlings; breast, sides, and under tail-coverts pale earthy brown, belly brownish white; under wing-coverts fulvous; bill and feet horn-colour: whole length 5·6 inches, wing 2·2, tail 3·0.

Hab. South America, from Colombia to Argentina.

[192.] SYNALLAXIS SUPERCILIOSA, Cab.
(EYEBROWED SPINE-TAIL.)