Sparrow-Hawk, may perhaps be placed here, as may _Megatriorchis doriae_ of New Guinea, in which the blackish upper parts have lighter transverse stripes, and the white under parts longitudinal dusky streaks. Sub-fam. 4. _Aquilinae._–The long-legged _Morphnus guianensis_, ranging from Panama to Amazonia, is black, with three ashy tail-bars, brown head and chest, and white rufous-banded abdomen; the fine crest is brown with black tip, the wing- and tail-coverts are varied with white. This bird haunts thick woods near water, and in habits appears to resemble the next two genera, which have similar soft plumage, short wings and long tails. _M. taeniatus_ of Ecuador has broader and blacker bars below. _Harpyopsis novae guineae_ of New Guinea, and _Thrasaëtus harpyia_, the Harpy, extending from Mexico, to Paraguay and Bolivia, have blackish-grey upper parts with a tendency to darker transverse markings; the tail shews six black bars; and the white under parts exhibit a greyish zone on the chest. The former species is, moreover, relieved by white above, while a bifurcated grey crest surmounts the white head and neck of the latter. Marvellous stories have been told of the fierceness and strength of the last-named, but despite its huge bill and legs, it seems never to attack man, though defending itself with spirit when wounded. Found in low-lying forests and near rivers, it may be seen wheeling in circles with slow heavy flight, or digesting its meals on low boughs of trees. The diet consists largely of mammals, including fawns, monkeys, foxes and peccaries; the nest is in high trees or cliffs. The Indians are very proud of a living specimen, while the down is used for decoration, and the feathers for arrow-making. _Harpyopsis_ devours wallabies. {160}_Pithecophaga jefferyi_, a fine forest Eagle from the Philippines, with extremely deep and compressed bill, seems to belong here.[138] The true Eagles–fierce but seldom courageous–inhabit wild mountains, plains, or forests; resembling Buzzards in their slow heavy flight, and rarely uttering their shrill cry or yelp. The prey is generally secured by a pounce; and carrion, if fairly fresh, is eaten. The nest of sticks or twigs, lined with grass, green foliage, fur or wool, especially the two first, contains from one to three large white eggs, with or without red or brownish markings.