My specimens were obtained at Maldonado in June, and therefore probably it is not a bird of passage. It frequented reeds on the borders of a lake, but was exceedingly rare. I likewise saw one in Northern Patagonia, and in a collection of birds at Santiago, in Chile, made there by an inhabitant of the place. The soles of the feet of this exquisitely beautiful little bird are bright orange. [Illustration: _Birds. Pl. 28._ _Sylvicola aureola._ ] TRICHAS VELATA. _G. R. Gray._ Sylvia velata, _Vieill._ Ois. de l’Amer. Sept., ii. pl. 74. —— _D’Orb. & Lafr._ Mag. de Zool. 1836, p. 20. Tanagra canicapilla, _Swains_, Ill. Orn. pl. 174. Trichas canicapilla, _Swains_. My specimen was procured at Maldonado in June. FAMILY.—FRINGILLIDÆ. SUB-FAM.—ALAUDINÆ. MELANOCORYPHA CINCTURA. _Gould._ _M. Fæm. fuscescenti rufa; gulâ abdomineque medio pallidioribus; remigibus ad apicem nigrescenti fuscis; rectricibus singulis maculâ albâ ovatâ nigrescenti fuscâ ad apicem notatis._ Long. tot. 5¾ unc.; _alæ_, 3¼; _caudæ_, 2¼; _tarsi_, ¾; _rost._ ½. The whole of the plumage, bill, and feet, sandy rufous brown, which is lightest on the throat and centre of the abdomen; primaries near their extremities passing into blackish brown; and each of the tail feathers with a large oval spot of blackish brown near the tip. Habitat, St. Jago, Cape Verde Islands. (_September._) This bird inhabits the most arid plains of lava; it runs, and in its habits resembles, in many respects, a lark. PYRRHALAUDA NIGRICEPS. _Gould._ _P. supra fuscescenti albâ, plumis medio obscurioribus; fronte, genis lineâque pectoris utrinque albis; corpore infra lineâque à basi rostri supra oculos ad occiput transiente nigris; caudæ plumis mediis nigrescentibus fuscescenti albo marginatis, plumis externis atris._ Long. tot. 4⅝ unc.; _alæ_, 2⅞; _caudæ_, 1⅝; _tarsi_, ⁶⁄₁₀; _rost._ ⁴⁄₁₀. Upper surface brownish white, with the middle of the feathers darker; the front, cheeks, and a line on each side of the breast white; beneath the body, and a line from the bill passing over the eyes to the hind head, black; the tail with the middle feathers blackish, margined with brownish white, the outer feathers deep black; the bill and feet pale. Habitat, St. Jago, Cape Verde Islands. (_September and January._) Like the last species, this bird inhabits sterile lava plains; it runs like a lark, and generally goes in small flocks. SUB-FAM.—PYRRHULINÆ. SPERMOPHILA NIGROGULARIS. _Gould._ _S. capite corporeque supra, alis caudâque fusco cinereis; loris gulâque nigris; lineis à rostri angulis per collum utrinque descendentibus, pectore abdomineque mediis, tegminibusque caudalibus inferioribus cinereo albis._