_Tyrannus Dominicensis._ _Muscicapa Dominicensis_, +Linn.+—Aud. pl. 170. _Tyrannus griseus_, +Vieill.+ Ois. de l’Am. 46. _Tyrannus Dominicensis_, +Bonap.+ [48] Length 9¹⁄₂ inches, expanse 14¹⁄₂, tail 3⁸⁄₁₀, flexure 4⁵⁄₈, rictus 1¹⁄₄, tarsus ⁹⁄₁₀, middle toe ³⁄₄. Irides dark hazel. Intestine 8 inches: two cæca very minute, about ¹⁄₈ inch long, and no thicker than a pin, at 1 inch from the cloaca. Sexes exactly alike. The history of this bird shall be mainly told by my valued friend Mr. Hill. “It is along the sea-side savannas and pastures, and among the adjacent hills and valleys, that the migratory flocks of the Grey Petchary swarm at the beginning of September. Occasional showers have given a partial freshness to the lowland landscape; the fields have begun to look grassy and green, and the trees to brighten with verdure, when numbers of these birds appear congregated on the trees around the cattle ponds, and about the open meadows, hawking the insect-swarms that fill the air at sun-down. No sooner do the migrant visitors appear on our shores, than the several birds of the species, that breed with us, quit their nestling trees, and disappear from their customary beat. They join the stranger flocks, and gather about the places to which the migratory visitors resort, and never resume their ordinary abodes till the breeding season returns. The migrant visitors do not appear among us many days before they become exceedingly fat: they are then eagerly sought after by the sportsman, who follows the flocks to their favourite haunts, and slaughters them by dozens. The Petchary is not exclusively an insect-feeder;—the sweet wild berries tempt him. In September the pimenta begins to fill and ripen, and in these groves the birds may always be found, not so much gathered in flocks as thickly dispersed about. It is, however, at sunset that they exclusively congregate; when insect life is busiest on the wing. Wherever the stirring swarms abound, they may be seen ranged in dense lines on the bare branch of some advantageous tree. By the end of September, the migrant Petcharies quit us, leaving with us most of those which bred with us.”