It inhabits Brazil south of the equator, Bolivia and Paraguay, also the northern provinces of the Argentine Republic. Mr. Barrows gives the following account of its lively habits in Entrerios:--"They are commonly seen perched on fences or the tops of bushes or trees in open ground, frequently making sallies for winged insects, or dropping to the ground to catch a grasshopper or worm. When shot at while perched and watching you, they almost invariably leave the perch at the flash, pitching forward and downward, and usually evading the shot, even at short range. Several times I have secured them by shooting about a foot below and two feet in front of them as they sat, but they do not always fly in this direction. The rapidity of their flight when frightened, or when quarrelling, is simply astonishing. I have seen one chase another for three or four minutes, doubling, turning, twisting, and shooting, now brushing the grass, and now rising to a height of at least two or three hundred feet, and all the movements so rapid that the eye could scarcely follow them; and at the end of it each would go back to the top of his own chosen weed-stalk, apparently without a feather ruffled." Azara found this species breeding in a hole in a bank; and Mr. Dalgleish has described a nest, taken from a tree in Uruguay, as a somewhat slight structure, four inches in diameter, formed of sticks and fibres, lined with fine grass and a few feathers. It contained three eggs, pear-shaped, white, with large well-defined spots of reddish brown. 113. TÆNIOPTERA CORONATA (Vieill.). (BLACK-CROWNED TYRANT.) +Tænioptera coronata+, _Burm. La-Plata Reise_, ii. p. 459; _Scl. et Salv. Nomencl._ p. 42; _Durnford, Ibis_, 1877, p. 176 (Buenos Ayres); _White, P. Z. S._ 1882, p. 603 (Buenos Ayres); _Döring, Exp. al Rio Negro, Zool._ p. 42 (R. Colorado); _Barrows, Bull. Nutt. Orn. Cl._ vol. viii. p. 138 (Entrerios). +Xolmis variegata+, _Darw. Zool. Voy. Beagle_, iii. p. 54 (Santa Fé). _Description._--Above cinereous; rounded summit of head black, broad front and band encircling the black of the head white; wings blackish, upper coverts cinereous, edgings of middle and greater coverts and of outer secondaries whitish; tail blackish, margins of outer webs of external tail-feathers white; beneath white; under wing-coverts and a large portion of the inner webs of the remiges, except of the two outer primaries, white; bill and feet black; whole length 7·8 inches, wing 4·6, tail 3·1. _Female_ similar. _Hab._ Argentine Republic, Uruguay, and Paraguay. In this species the sexes are alike. The crown is black and composed of loose feathers; the forehead, and a broad line over the eye which extends nearly round the head, also all the under plumage, pure white; neck and back clear grey; quills black.