Long. tot. 6½ unc.; rost. ¾;l alæ, 2½; caudæ, 3⅝; tarsi, ¾.
Head and all the upper surface, brown; primaries, dark brown, with the basal portions rufous; six central tail-feathers, blackish brown; the remainder ferruginous; sides of the face and throat yellowish, with the tip of each feather dark brown; the remainder of the under surface, greyish brown; bill and feet, dark brown.
Habitat, Patagonia.
My specimens were obtained at Bahia Blanca and at Santa Cruz, two extreme parts of Patagonia. It frequents the thinly scattered thickets on the arid plains: the hind claw of its foot is not produced as in S. rufogularis, and it lives less on the ground.
6. Synallaxis brunnea. Gould.
S. pallide rubro fusca; primariis secundariisque rufis apice fuscis; caudæ plumis quatuor mediis nigrescenti fuscis, duabus proximis ferrugineo fuscis internè nigrescenti-marginatis, duabus extimis ferrugineo fuscis; genis, gulâ abdomineque medio albescentibus; hypochondriis cinereis.
Long. tot. 5⁴⁄₁₂; unc.; rost. ⁵⁄₁₂; alæ, 2³⁄₁₂; caudæ, ⅝; tarsi, ¹⁰⁄₁₂.
Head and all the upper surface pale reddish brown; primaries and secondaries, brown at the tip and rufous at the base; four central tail feathers, blackish brown; the next on each side rusty brown, margined internally with blackish brown; the two lateral feathers wholly rusty brown; sides of the face, throat, and centre of the abdomen, whitish; flanks cinereous; bill and feet brown.
Habitat, Port Desire, Patagonia. (January.)
