Bill long, subulate, depressed at the base, cylindrical, straight, or slightly arched, flexible; upper mandible with the ridge narrow at the base, convex in the rest of its extent, the sides sloping, the edges soft; lower mandible with the angle extremely acute and elongated, the sides erect, the tip acute. Nostrils linear, with a membranous flap above. Head small; neck short; body moderately stout. Feet very short; middle toe scarcely longer than the rest. Plumage rather blended and glossy above. Wings very long, extremely narrow; tail rather long, broad, nearly even. The other characters as above. 251. 1. Trochilus Mango, Linn. Mango Hummingbird. Plate CLXXXIV. Male and Female. Male with the head, hind neck, and back green, splendent with bronze and golden reflections; wings dusky, changing to purplish-brown; middle tail-feathers black, glossed with green and blue, the rest deep crimson-purple, tipped and partially margined with steel-blue; fore part of neck, and middle of breast velvet-black, margined on each side with emerald-green, the sides yellowish-green, with a tuft of white downy feathers; lower tail-coverts dark purple. Female with the upper parts similar, the tail-feathers more broadly and extensively margined with blue, and tipped with white; fore neck and centre of the breast white, with a central longitudinal band of black, and an emerald-green margin along the sides of the neck and body; lower tail-coverts green. _Male_, 4-3/4, 8. Florida Keys. Rare. Migratory. Trochilus Mango, Linn. Syst. Nat. v. i. p. 191. Mango Humming Bird, Trochilus Mango, Aud. Orn. Biog. v. ii. p. 480. 252. 2. Trochilus Anna, Less. Anna Hummingbird. Plate CCCCXXV. Male and Female. Bill almost straight, acuminate; tail of moderate length, emarginate and rounded. Head, cheeks, and throat blood-red, changing to gold, and having a tinge of blue; upper parts light gold-green; quills and tail-feathers dusky brown; lower parts brownish-white. Female with merely a patch of red on the throat, upper part of head and cheeks greenish-grey; upper parts glossy green as in the male; wings dusky, middle tail-feathers green, the rest greenish-grey at the base, black toward the end, with the tips white; lower parts dull grey, sides tinged with brown. _Male_, 3-10/12, wing, 2-1/12. Rocky Mountains towards California. Common. Migratory. Oiseau-mouche Anna, Ornismya Anna, Less. Traite d'Ornith. p. 281. Anna Humming Bird, Trochilus Anna, Aud. Orn. Biog. v. v. p. 238. 253. 3. Trochilus Colubris, Linn. Ruby-throated Hummingbird. Plate XLVII. Male, Female, and Young.