Platyrhynchus mystaceus, Scl. et Salv. Nomencl. p. 44; White, P. Z. S. 1882, p. 605 (Misiones).
Description.—Above olive, darker on the head; coronal patch bright yellow; lores, eye-region, and ear-coverts pale yellowish; mystacal stripe blackish; wings and tail blackish edged with olive-brown; below clear fulvous, much whiter on the throat; upper mandible blackish, lower whitish; feet pale yellowish: whole length 3·3 inches, wing 2·1, tail 1·1. Female similar, but no coronal patch.
Hab. Guiana, Brazil, Paraguay, and Northern La Plata.
A single example of this species was obtained by White in the forest near San Javier, Misiones.
[138.] EUSCARTHMUS MARGARITACEIVENTRIS (d’Orb. et Lafr.).
[(PEARLY-BELLIED TYRANT.)]
Todirostrum margaritaceiventer, d’Orb. Voy., Ois. p. 316 (Corrientes). Euscarthmus margaritaceiventris, Scl. et Salv. Nomencl. p. 45; Salvin, Ibis, 1880, p. 357 (Tucuman). Triccus margaritiventris, Burm. La-Plata Reise, ii. p. 456 (Paraná).
Description.—Above olive-green, wings and tail blackish edged with olive-green; whole head above, including sides and back of neck, dark cinereous; beneath pearly white, passing into pale cinereous on the sides; under wing-coverts pale yellowish, flanks tinged with olivaceous; bill hazel; feet red: whole length 4·5 inches, wing 2·1, tail 1·9.
Hab. Paraguay, Northern La Plata, Bolivia, S. Peru, and S.E. Brazil.
This species, discovered by d’Orbigny in Corrientes, was also met with near Paraná by Prof. Burmeister, and by Durnford in Tucuman.