+Elainea modesta+, _Burm. La-Plata Reise_, ii. p. 454. +Elainea albiceps+, _Scl. et Salv. Nomencl._ p. 48; _Durnford, Ibis_, 1878, p. 60 (Buenos Ayres); _Barrows, Bull. Nutt. Orn. Cl._ vol. viii. p. 200 (Entrerios); _White, P. Z. S._ 1882, p. 606 (Buenos Ayres). _Description._--Above dark ashy brown, with a slight olivaceous tinge on the rump; head slightly darker, with a more or less concealed white vertical spot; wings and tail blackish brown; tips of wing-coverts, forming two transverse bands, and outer margins of exterior secondaries dirty white; rest of wing-feathers and tail-feathers slightly margined with lighter colour; below nearly uniform pale cinereous, whiter on the throat and middle of the belly; under wing-coverts slightly tinged with yellowish; bill brownish; feet black: whole length 6·0 inches, wing 3·2, tail 3·0. _Female_ similar. _Hab._ Peru, Ecuador, Bolivia, Guiana, Brazil, Argentina, Chili, Patagonia. A widely spread species, very common near Buenos Ayres according to White, where it is found in the clumps of trees. 153. ELAINEA STREPERA, Cab. (NOISY TYRANT.) +Elainea strepera+, _Cab. J. f. O._ 1883, p. 215. _Description._--Above dark greyish olive; head slightly crested, with a white basal spot; eye-ring white; wings and tail blackish, tips of wing-coverts rufous, slight margins of wing and tail-feathers olivaceous; beneath cinereous; middle of belly white; flanks olivaceous; under wing-coverts pale cinereous; bill dark brown, pale at the base; feet blackish: whole length 5·6 inches, wing 2·9, tail 2·7. _Hab._ Tucuman. Dr. Cabanis established this species, which is unknown to us, on specimens obtained by Herr Schulz in the woods of Tucuman. It is said to have a loud voice, and to feed on berries. 154. ELAINEA VIRIDICATA (Vieill.). (GREENISH TYRANT.) +Muscicapara viridicata+, _d'Orb. Voy., Ois._ p. 325. +Elainea grata+, _Cab. J. f. O._ 1883, p. 216 (Tucuman). _Description._--Above dark olive-green; head dark cinereous, slightly crested, with a large basal spot of bright yellow; lores and eye-region mixed with whitish; wings and tail ashy black, with slight margins of the same colour as the back; below pale cinereous; belly, crissum, and under wing-coverts sulphur-yellow; bill blackish; feet dark brown: whole length 5·0 inches, wing 2·5, tail 2·5. _Female_ similar. _Hab._ South America. The _Elainea grata_, based by Dr. Cabanis upon specimens obtained by Herr Schulz in Tucuman, must, I think, be identical with Azara's _Contramaestre pardo verdoso, corona amarilla_, upon which Vieillot established his _Sylvia viridicata_. It is certainly, in my opinion, the _Muscicapara viridicata_ of d'Orbigny. Herr Schulz met with this species in the province of Tucuman, in the month of December. 155. EMPIDAGRA SUIRIRI (Vieill.). (SUIRIRI TYRANT.)