with inconceivable swiftness, and wheeling so as to come up beneath him, would drive him from his repast. He might fly to any part of the room unmolested, but an approach to the cup was the signal for an instant assault. The ill-natured fellow himself took long and frequent draughts. "When these birds were accustomed to the room, their vivacity was extreme; as manifested in their upright position and quick turns and glances when sitting, which caused their brilliant breasts to flash out from the darkness into sudden lustrous light, like rich gems; and no less by their startings hither and thither, and their most graceful wheelings and evolutions in the air, so rapid that the eye was frequently baffled in attempting to follow their motions." * * * * * The COMETS (_Sparganura_) possess a very remarkably graduated tail, the outer feathers of which are five times as long as those in the centre. THE SAPPHO COMET. The SAPPHO COMET (_Sparganura Sappho_) is bright scarlet on the back, and of a metallic green on the head and under side; the throat, of a lighter shade, is lustrous, and the lower part of the belly light brown; the quills are purplish brown, the tail-feathers brown, very glossy at the base, and bright fiery orange towards the deep brown tip. The female is green on the mantle, and spotted grey on the under side; her tail is short, and its feathers of an uniform light red. "No combination of gorgeous colouring," says Dr. Tschudi, "can exceed that which is presented in the plumage of this Humming Bird, as it appears and disappears like a dazzling flash of coloured light. It haunts the warm, primeval forests, but is still more frequently found in the pure atmosphere of the ceja-girded montãnas." [Illustration: THE SAPPHO COMET (_Sparganura Sappho_).] "One of the principal summer haunts of this bird," writes M. Bourcier, "is Chuquesaca, in the interior of Bolivia, where it appears when the fruit-trees of the country are in flower, and is met with in the greatest numbers among the flowers of the capulo, a kind of cherry-tree; it also visits the orchards and gardens of the city during the blossoming of the apple-trees. It is by no means shy, and the males are constantly at war, chasing each other with the utmost fury, uttering at the same time a sharp cry, whenever one bird invades another's territory." [Illustration: HUMMING BIRDS.]