On the grassy pampas the Miners invariably attach themselves to the _Vizcacheras_--as the groups of great burrows made by the large rodent, the Vizcacha, are called; for there is always a space free from grass surrounding the burrows where the birds can run freely about. In the sides of the deep pit-like entrance to one of these burrows the bird bores a cylindrical hole, from three to six feet long, and terminating in a circular chamber. This is lined with soft dry grass, and five white eggs are laid. Though the birds inhabit the Vizcacha village all the year, they seem always to make a fresh hole to breed in every spring, the forsaken holes being given up to the small Swallow, _Atticora cyanoleuca_. 177. GEOBAMON RUFIPENNIS, Burm. (RED-WINGED MINER.) +Geobamon rufipennis+, _Burm. La-Plata Reise_, ii. p. 465 (Paraná). _Description._--Above reddish grey-brown; lores, rim round the eye, cheeks, and body below white; breast tinged with yellowish grey; wings blackish brown, inner webs ferruginous, with their tips and outer basal edges pale ferruginous; tail bright ferruginous, with a broad black transverse band near the tip; bill black, base of under mandible and legs pale brown: whole length 7·0 inches, wing 4·0, tail 2·0. _Hab._ Paraná. This form is unknown to us, and we can only give a short translation of Burmeister's description of it. It is said to resemble _Geositta_, but has a much shorter and perfectly straight beak. 178. FURNARIUS RUFUS (Gm.). (RED OVEN-BIRD.) +Furnarius rufus+, _Burm. La-Plata Reise_, ii. p. 462 (La Plata); _Scl. et Salv. Nomencl._ p. 61; _Durnford, Ibis_, 1877, p. 179 (Buenos Ayres); _Gibson, Ibis_, 1880, p. 16 (Buenos Ayres). _Description._--Above earthy brown, with a slight rufescent tinge, wing-feathers blackish, margined with pale brown; whole of the outer secondaries pale brown, like the back; tail and upper tail-coverts bright ferruginous brown; below white, breast and flanks and under wing-coverts pale sandy-brown; under surface of the wing with a broad sandy bar across the basal portion; bill and feet horn-colour: whole length 7·8 inches, wing 4·0, tail 2·8. _Female_ similar. _Hab._ Argentina, Uruguay, and Paraguay. The Red Oven-bird is an extremely well-known species in Argentina, and, where found, a great favourite on account of its familiarity with man, its loud, ringing, cheerful voice, and its wonderful mud nest, which it prefers to build near a human habitation, often on a cornice, a projecting beam, or on the roof of the house itself.