DE LALAND'S PLOVER-CREST (_Cephalolepis Delalandii_), a very beautiful species, inhabiting Brazil, is of a pale but very pure metallic green on the back and centre tail-feathers. The crest that adorns the head is bright, light green, becoming darker towards its apex; in old age this plume changes to a steel-blue; the under side is dark grey; a patch that commences at the throat, and covers the breast and centre of the belly, is bright blue; the quills are greyish brown, shaded with violet; the exterior tail-feathers are black, edged with white; the beak is black, and the foot blackish brown. The female and young are without the crest and the blue patch on the breast. The body of this species is three inches and a half long; the wing measures two inches, and the tail one inch. The crest of the male is one inch and two-thirds long. This graceful species of Humming Bird was first discovered by M. Delaland, in the southern portion of Brazil. Mr. Reeves states that it inhabits Rio de Janeiro, Minos Gerves, and Santa Catherina, but he was unaware whether it remains in those provinces all the year or not. "Of the two nests that I possess," says Mr. Gould, "one is of much more lengthened form than the other, but both are composed of the same materials, namely, fine fibrous roots, moss, lichens, and involucres of a composite plant, the whole matted together with spiders' webs of so fine a kind that they are almost imperceptible. Both had been suspended among the slender twigs of a species of banana." * * * * * The COQUETTES (_Lophornis_) are remarkable for the magnificent collar that adorns their neck, formed of long, narrow, and most delicately-marked feathers; this collar can be raised or laid back at pleasure. The head is usually embellished by a crest; the awl-shaped beak equals the head in length; the wings are small and slender; the tail is composed of broad, long feathers. THE SPLENDID COQUETTE. The SPLENDID COQUETTE (_Lophornis ornata_), a very richly-tinted species, inhabiting Guiana, is of a bronze-green on the rump; the crest is brownish red, and a white line passes over the lower part of the back; the region of the face is green, with a most brilliant lustre; the graduated feathers that form the collar are light reddish brown, spotted with glowing green; the quills are deep purplish brown, and the beak flesh-pink, tipped with brown. The female is much paler, and entirely without the crest, collar, and green about the beak--features that so materially enhance the beauty of the male.