Family IV. CAPRIMULGINAE. GOATSUCKERS
GENUS II. CHORDEILES, Swains. NIGHT-HAWK

Mouth opening to beneath the centre of the, eyes; bill extremely small; upper mandible with the tip decurved, and a deep lateral groove. Nostrils oblong, prominent, marginate. Eyes very large. Aperture of ear elliptical, very large. Head very large, depressed, but less so than in Caprimulgus. Claw of middle toe pectinate. No bristles at the base of the upper mandible. Wings very long, pointed, with the first quill longest, and the secondaries very short. Tail emarginate.