Sisopygis icterophrys, Hudson, P. Z. S. 1868, p. 141; Scl. et Salv. Nomencl. p. 43; Durnford, Ibis, 1877, p. 176 (Buenos Ayres); Gibson, Ibis, 1880, p. 29 (Buenos Ayres): White, P. Z. S. 1882, p. 604 (Buenos Ayres); Barrows, Bull. Nutt. Orn. Cl. viii. p. 141 (Entrerios). Tænioptera icterophrys, Burm. La-Plata Reise, ii. p. 460 (Paraná).
Description.—Above bright olive-green, head rather greyish, lores and superciliary stripes yellow; wings blackish, broad ends of coverts and outer edges of secondaries dirty white; tail blackish; beneath bright yellow, sides of breast and flanks olivaceous; under wing-coverts whitish; bill dark horn-colour; feet black: whole length 6·1 inches, wing 3·5, tail 2·7. Female similar, but less bright.
Hab. S.E. Brazil, Paraguay, Uruguay, Northern La Plata, and highlands of Bolivia and Peru.
This small and pretty Tyrant-bird is quite common in the woods along the Plata, and is also seen a great deal in orchards and groves in the cultivated districts. In Buenos Ayres it is a summer visitor, appearing there in October, and is a shy, solitary bird, which catches insects on the wing, and rarely visits the ground.
The nest is placed in a tree, ill-concealed, and very shallow: it is built of fine sticks, and lined with fine grass, horse-hair, and feathers. The eggs are four, pointed, pale cream-colour, with large dark red spots, chiefly at the larger end.
The only language of this species is a very low plaintive whistle, uttered as a faint protest when the nest is approached.
The upper plumage is olive-green; the entire under surface and a stripe on the side of the head pure yellow; wing and tail-quills dark. Total length 6¼ inches.
[126.] CNIPOLEGUS ANTHRACINUS, Heine.
(ASHY-BLACK TYRANT.)
Cnipolegus anthracinus, Scl. et Salv. Nomencl. p. 43; Salv. Ibis, 1880, p. 356 (Salta); Döring, Exp. al Rio Negro, Zool. p. 24 (Patagonia). Cnipolegus aterrimus, White, P. Z. S. 1882, p. 604 (Misiones). Cnipolegus hudsoni, White, P. Z. S. 1883, p. 39 (Cordova)? Myiarchus fasciatus, Leybold, J. f. O. 1865, p. 402 (Mendoza), ♀.