This fine and distinct species was first obtained by Dr. Burmeister in Cordova and in Tucuman, where Durnford also obtained specimens of it during his last journey. It is larger than _N. pentlandi_, and has the breast thickly covered by somewhat rounded light spots upon a cinereous ground; these are mixed with black points and slight striations. 430. NOTHURA MACULOSA (Temm.) (SPOTTED TINAMOU.) +Nothura maculosa+, _Burm. La-Plata Reise_, p. 499; _Scl. et Salv. Nomencl._ p. 153; _iid. P. Z. S._ 1868, p. 143 (Buenos Ayres); _Hudson, P. Z. S._ 1872, p. 547 (Rio Negro); _Durnford, Ibis_, 1877, p. 203 (Buenos Ayres); _Gibson, Ibis_, 1880, p. 168 (Buenos Ayres); _White, P. Z. S._ 1882, p. 629 (Misiones); _Barrows, Auk_, 1884, p. 317 (Entrerios, Bahia Blanca); _Withington, Ibis_, 1888, p. 473 (Lomas de Zamora). +Nothura major+, _Darwin, Zool. 'Beagle,'_ iii. p. 119. _Description._--Above pale yellowish brown, barred with black and brown and streaked with fulvous white; wing-feathers ashy black, crossed on both webs by fulvous bands: beneath rich yellowish brown; throat white; breast and flanks spotted and banded with brownish black; bill and feet yellowish brown: whole length 11·0 inches, wing 5·5, tail 1·6. _Female_ similar, but larger. _Hab._ Argentine Republic. The _Perdiz comun_ or Common Partridge of the pampas, as it is always called--the naturalist's name of Tinamou being utterly unknown in the southern part of South America--is much smaller than the "Perdiz grande," but in its form, slender curved beak, bare legs, and in the yellowish mottled plumage generally resembles it. It also inhabits the same kind of open grassy country, and is abundant everywhere on the pampas and as far south as the valley of the Rio Negro in Patagonia. It is solitary; but a number of individuals are usually found in proximity; and in lonely places on the pampas, where they are excessively abundant, I have seen three or four meet together and play in the manner of kittens, darting out from a place of concealment at each other, the pursued bird always escaping by turning off at right angles or by suddenly crouching down and allowing the pursuer to spring over it.