[5.] TURDUS NIGRICEPS, Cab.
(BLACK-HEADED THRUSH.)
Turdus nigriceps, Cab. J. f. O. 1878, p. 195.
Description.—Above slaty grey, head black; below paler, chin white, striped with black; middle of belly and crissum white; bill and feet pale yellow: total length 7·6 inches, wing 4·4, tail 3·5. Female olive-brown, paler below, chin pale ochraceous; middle of belly and crissum white; bill brown, feet yellowish.
Hab. Peru, Bolivia, and Northern La Plata.
Met with by Dr. A. Döring and Herr Schulz on the Sierra of Cordova.
[6.] MIMUS MODULATOR, Gould.
(CALANDRIA MOCKING-BIRD.)
Mimus modulator, Sharpe, Cat. B. vi. p. 347. Mimus calandria, Burm. La-Plata Reise, ii. p. 475; Scl. et Salv. Nomencl. p. 3; Hudson, P. Z. S. 1870, p. 89 (Buenos Ayres); Durnford, Ibis, 1877, p. 167 (Buenos Ayres); White, P. Z. S. 1883, p. 37 (Cordova); Barrows, Bull. Nutt. Orn. Cl. viii. p. 85 (Concepcion).
Description.—Above dark grey, faintly mottled with pale grey; rump tinged with brown; wings nearly black, the feathers edged with brownish white; tail black, the feathers, except the two middle ones, broadly tipped with white; under surface dirty white; bill and legs black; eye olive-green: total length 11·0 inches, wing 4·5, tail 4·9. Female similar.