"When engaged in the capture of insects," says Gould, "it usually perches upon the dead, upright branch of a tree growing beside and overhanging water, where it sits very erect, staring all around until a passing insect attracts its notice, when it suddenly darts off, secures its victim, and returns to the same branch; at other times it may constantly be seen on the wing, mostly in pairs, flying just above the tops of the trees, diving and rising again with rapid turns in the most beautiful manner. During flight, which, when performed at a considerable elevation, is laboured and heavy, the white spot in the centre of each wing, then widely expanded, shows very distinctly; and hence the name of Dollar Bird bestowed on it by the colonists. It is very noisy, particularly in dull weather, when it often emits its peculiar chattering note during flight. The breeding season continues from September to December; the three or four pearl-white eggs are deposited in a tree." THE ORIENTAL DOLLAR BIRD. 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.