(LONG-TAILED TYRANT.)
+Phylloscartes flavo-cinereus+, _Burm. La-Plata Reise_, ii. 455
(Mendoza); _Döring, Exp. al Rio Negro, Zool._ p. 42 (R. Negro, R.
Colorado). +Stigmatura flavo-cinerea+, _Hudson, P. Z. S._ 1872,
p. 542 (Rio Negro); _Scl. et Salv. Nomencl._ p. 46; _White, P. Z.
S._ 1882, p. 606 (Catamarca).
_Description._--Above greyish olive, lores and superciliary stripe
whitish; wings blackish, with whitish edgings to the coverts and
outer secondaries; tail blackish; outer web of the external rectrix
and broad tips of the four external pairs white; beneath pale
yellow; bill and feet black: whole length 5·8 inches, wing 2·3, tail
3·0. _Female_ similar.
_Hab._ Argentine Republic, including N. Patagonia.
This little bird inhabits the Mendoza and Patagonian districts, and
does not appear to be migratory, for on the Rio Negro I found it at all
seasons. It is slender in form, with a long tail, its total length being
six inches. The sexes are alike in colour; the upper parts are yellowish
grey, breast and belly light yellow. They are found living in pairs, all
the year round, in thorn bushes, and are scarcely ever seen to rest, but
hop incessantly from twig to twig, in a delicate, leisurely manner,
seeking on the leaves for the minute caterpillars and other insects on
which they live. While thus engaged they utter a variety of little
chirping and twittering notes, as if conversing together, and
occasionally the two birds unite their voices in a shrill, impetuous
song.