The nest, which is large, thick, and ball-shaped, is artistically constructed of moss, leaves, grass, and feathers, and is entered by a small round aperture in the sides. The eggs, three or four in number, have a pale greenish shell, marked with a few black and greenish blue spots, which are most thickly strewn over the broad end. We learn from Azara that the Bentevi is readily tamed, and when caged will live on peaceful terms with its companions. The same authority mentions a peculiarity that he observed in one of these birds that he himself reared, namely, that it always seized the bits of flesh that were given to it in his beak, and struck them repeatedly against the ground, as though he supposed the morsels required killing before they could be eaten. * * * * * The FORK-TAILED TYRANTS (_Milvulus_) differ from the groups already described principally in the great length of their forked tails. Their bodies are slender, and they have short necks, broad heads, and long wings. Their large, strong beaks bulge slightly towards the sides, terminate in a decided hook, and are partially covered with bristles at the base; the feet are short; the toes of moderate size, armed with very sharp, compressed claws; the three first wing-quills, of which the second is the largest, are pointed at the tip. This latter peculiarity is particularly apparent in the male. The plumage is soft and elastic, but by no means thick. THE SCISSOR BIRD. The SCISSOR BIRD of the Brazilians (_Milvulus tyrannus_), though properly a native of Central America, is occasionally met with in the United States. The length of this elegant species is about fourteen inches, of which at least ten belong to the exterior tail-feathers, whilst those in the centre do not measure more than two and a half inches. Its head and cheeks are deep black, except at the lower part of the crest, which is yellow; the back is ash-grey; the under side white; the quills, wing-covers, and rump are blackish brown, edged with grey; the outer web of the exterior tail-feathers is white along the whole of the upper half; the eye dark brown; the beak and feet are black. [Illustration: THE SCISSOR BIRD (_Milvulus tyrannus_).]