This beautiful little gem--a native of Vera Paz, in Guatemala--is adorned somewhat after the fashion of the Birds of Paradise, its head being ornamented with six long, green, hair-like feathers, three on either side of the body. The upper part is of a coppery bronze colour, a band of buff crossing the lower end of the back. The face is green; and the throat is adorned with emerald feathers surrounded with others long and white. These start from the neck, being edged with blue-black. Beautifully adorned as is the male, the hen-bird possesses neither crest nor neck-plumes, her colour being of a dull, bronze-green, and greyish-white sprinkled with green on the under part of the body. THE SPARKLING-TAIL HUMMING-BIRD. The little sparkling-tail is one of the boldest and most familiar of its tribe, being seen flitting from flower to flower among the gardens in Guatemala, and remaining with perfect confidence even while people are moving about near it. It is one of the smallest of its tribe--the nest being also of a proportionate size, formed of various delicate fibres, such as spider's webs and cottony down, and covered with lichens. Within it the female lays two eggs, scarcely larger than peas, of a delicate, almost transparent, pearly white. This nest is secured to a slight twig by spider's webs. The general colour of the male is bronzed green above, with a crescent-shaped white mark on the lower part of the back. It has a rich metallic blue throat, changing in certain lights; and the wings are of a dark purple-brown. The tail is composed of feathers of different tints--the two central of a rich, shining green; the next, green, marked with bronze; and the outer, dark brown, with triangular white spots on the inner web. The whole length of the bird, with its forked tail, is about four inches. The hen has a shorter tail, the feathers purple-black, bronzed at the base, and most of them tipped with white and ringed with buff. The upper part of the body is of a rich bronzed green; and the lower, a rusty-red. Many other beautiful humming-birds appear throughout different parts of Mexico and Central America; but we may grow weary even when examining caskets of the most brilliant gems; and we shall have many others to describe when we reach the southern part of the continent. LOCUSTS.