The description below is made from a dried skin in very poor order, but assisted by one of Mr. Hill’s exquisite drawings, executed when the bird was recent. It was shot in 1843, near Spanish-town, in company with many others. I conclude it to be the _nigra_ of Gmelin and Latham, as the latter ornithologist attributes that species to St. Domingo as well as Guiana. CAVE SWALLOW.[15] _Hirundo pœciloma._—+MIHI.+ [15] Length 5¹⁄₄ inches, expanse 11, flexure 4, tail 1¹⁷⁄₂₀, rictus ¹¹⁄₂₀, beak along culmen ³⁄₁₀, tarsus ⁵⁄₁₀, middle toe ⁵⁄₁₀, lateral toes ³⁄₁₀, equal. Irides dark brown; beak black, feet dark grey. Forehead dark chestnut; crown and hind head black, glossed with greenish-blue; cheeks, chin, and throat paler chestnut, separated from that of the forehead by the black passing over each eye to the nostrils; the chestnut of the throat runs up in a narrow collar round the neck; back variegated with blue-green, and white, each feather being white, with a dark tip; rump chestnut, the feathers sometimes having pale tips; tail-coverts and tail brownish black, the former having pale tips; tail nearly even; wings brownish black, the tertiaries _in some_, edged and tipped with white; breast and sides pale chestnut, the colour deepening in a crescent-shaped band across the breast; medial belly, white; under tail-coverts pale chestnut. First and second quills equal. Legs feathered to the tarsal joint. The sexes exactly alike. Intestine 4 inches; two minute cæca ³⁄₄ of an inch from cloaca. Mature consideration convinces me that this species is quite distinct from the _H. fulva_ of Vieillot though closely allied to it. The present may be at once recognised by the conspicuous mottling of its shoulders and back with white and blue black, a character which, as far as I have examined, is invariable. The form of its nest also differs greatly from the bottle-like structures of the interesting bird of the Rocky Mountains.