The ORIENTAL DOLLAR BIRD (_Eurystomus Orientalis_), a nearly-allied Indian species, we are told, passes a great portion of its time in flying from place to place, and hangs, Woodpecker-like, from the trunks of trees whilst in search of the grubs and insects on which it subsists.
The SAW-BILL ROLLERS (_Prionites_), though in many respects resembling the Blue Rollers, differ from that bird in their superior length of tail and height of tarsus, as well as in the saw-like edges with which the margin of the beak is furnished; the latter is slightly curved, compressed at its sides, and without a hook at its tip; the base of the beak is overgrown with stiff, bristle-like feathers. The wings, in which the fourth or fifth quills are the longest, are short and rounded; the strong, wedge-shaped tail is composed sometimes of ten, sometimes of twelve feathers, placed in pairs of equal length, of which the centre pair are the longest. The plumage is full, soft, and consists of large feathers, thickly covered with down at the roots.
The Saw-bill Rollers occupy the woods and forests of South America, and lead a retired life, either alone or in pairs, and far from the abode of man; their cry, which resembles a note from a flute, is most frequently heard in the morning and evening. Insects afford their principal means of subsistence, and these they obtain in a great measure from the surface of the ground.
The MOT-MOT (_Prionites momota_) is of an olive-green on the back, wing-covers, and legs; the neck, throat, breast, and belly are reddish yellow; the top of the head, cheeks, and bridles black; and the brow and a narrow collar at the back of the head of a brilliant blueish green; the quills are blackish, the secondaries sky-blue on the outer web. The tail, which is composed of twelve feathers, is green above and black beneath; the eye is reddish brown, the beak black, and the foot horn-grey. This species is nineteen inches long; the wing measures six and a half inches, and the tail eleven inches.
According to Burmeister, the Mot-mot inhabits the wooded districts in Northern Brazil; and Schomburghk, who found them very numerous in Guiana, had there an opportunity of observing their habits and mode of life. "Shortly before sunrise," says the last-named writer, "the plaintive and melancholy 'hutu, hutu' of the Saw-billed Roller may be heard among the foliage on the outskirts of the forest, announcing the approach of morning. This remarkable bird seems to avoid all well-lighted places; and, although by no means shy, never appears beyond the outskirts of the forest. It will even allow an intruder to come quite close to its perching-place before it flies off to another twig, where, immediately that it has perched itself, it again begins its well-known notes 'hutu, hutu,' accompanying each syllable with a stroke of its tail somewhat after the manner of our own Wagtail."