[33.] EUPHONIA NIGRICOLLIS (Vieill.).
(BLACK-NECKED TANAGER.)
Euphonia nigricollis, Scl. Cat. B. xi. p. 61. Lindo azul y oro cabeza celeste, Azara, Apunt. i. p. 390. Euphonia aureata, d’Orb. Voy., Ois. p. 267 (Corrientes).
Description.—Above glossy purplish black; rump yellow; cap and nape blue; front black; below orange-yellow, throat and sides of the head black; axillaries pale yellow; under wing-coverts whitish, inner margins of wing-feathers pale cinereous; bill black; feet pale brown: whole length 4·5 inches, wing 2·7, tail 1·5. Female above olive-green, rather lighter on the rump; cap blue; front chestnut, with a narrow dark margin between it and the blue cap; below yellowish olive-green, brighter on the belly.
Hab. South America from Colombia to Northern Argentina.
This Tanager was obtained by d’Orbigny in Southern Corrientes.
[34.] EUPHONIA CHLOROTICA (Linn.).
(PURPLE-AND-YELLOW TANAGER.)
Euphonia chlorotica, Scl. et Salv. Nomencl. p. 17; White, P. Z. S. 1882, p. 596 (Misiones, Catamarca); Scl. Cat. B. xi. p. 64.
Description.—Above dark purple-black; front half of the cap yellow; below yellow, throat purple-black; tail beneath black, with a large white patch on the inner webs of the two exterior tail-feathers; under surface of wings black, with a large white patch on the inner webs of the remiges; bill and feet black: whole length 3·3 inches, wing 2·1, tail 1·2. Female above greyish olive-green, with a yellowish tinge on the front and rump; below rather more yellowish, with the centre of the breast and belly pale ashy, flanks and crissum pale yellow; under wing-coverts and inner margins of wing-feathers whitish.