2. Myiobius auriceps.
Tyrannula auriceps. Gould, MS.
M. rufus; capite cristato nitidè flavo; plumarum apicibus brunneis; alis brunneis, secundariarum marginibus tectricumque apicibus rufis; caudâ pallidè brunnea, plumarum externarum marginibus externis pallidioribus; gutture corporeque subtus pallidè flavescenti-albis; plumis singulis fasciâ centrali brunnea.
Long. tot. 5³⁄₁₂ unc; alæ, 2⁵⁄₁₂; caudæ, 2⁶⁄₁₂; tarsi, ⁹⁄₁₂; rost. ⁷⁄₁₂.
All the upper surface rufous; the basal portion of the coronal feathers yellow; tail uniform light brown, the external margin of the outer feathers lighter; wings brown, the external margin of the secondaries and the tips of the greater and lesser wing-coverts rufous; throat and all the under surface pale buffy white, each feather having a brown mark down the centre; bill brown; feet black.
Habitat, Buenos Ayres, La Plata, (August).
This bird is about the size of a sparrow. It is nearly allied to Tyrannula ferruginea of Swainson and M. cinnamonea of D’Orbig. and Lafr.