Notices of the Washington Eagle having been captured, have appeared occasionally (as in Nuttal’s Manuel, I. p. 71, and the Boston Journal of Nat. Hist. III. p. 72), and we have seen numerous specimens of Eagles of a size so large that they could not, without much doubt, be referred to the common white-headed species. But we have never seen nor heard of a specimen which presented all the peculiar characters represented in Audubon’s plate, and especially the anterior scales of the tarsus continued transversely so far down to the toes. The pointed and slender feathers of the neck, the large size, and in one specimen of a young bird, the short bill we have seen, and there are specimens now in the collection of the Philadelphia Academy in which these characters will be found, but not the peculiar arrangement of the scales of the tarsus. All other species of fishing Eagles have the head more or less marked with white in their mature plumage. In Audubon’s plate of the Washington Eagle, the head is of the same deep brown as the other parts. From analogy, therefore, it may safely be presumed that he was mistaken in supposing his specimen to be that of an adult male bird. An interesting feature in the large specimens to which we allude, is the fact that they almost invariably have the ends of their tails broken as though injured by alighting habitually on rocks, or on the ground, thus apparently confirming Audubon’s statements. Young birds are however peculiarly liable to such injury on account of their feathers not possessing the strength and rigidity of more mature plumage. Respecting the Washington Eagle, our conclusion is, therefore, after many years of attention to American birds, and especially to obscure or little known species, that of the existence of such a species in North America as is described by Audubon, in Ornithological Biography, I. p. 58, there can be no reasonable doubt. But we are of opinion that when adult it is very probably a bird with the head more or less white, and tail of the same colour; and we are disposed to regard the plate in Birds of America as erroneous, for reasons above intimated, or for others not at present demonstrable, and at all events as representing a young specimen. Waiving the presence of the character of the scales of the tarsi as above stated, we think that we have several times seen the young of the Washington Eagle, and that specimens of it are now in the collection of the Philadelphia Academy. It is not, however, so large as the immense Eagle which in the present article, and accompanying plate, we have the pleasure of presenting to the American public for the first time, but it appears to us to be more nearly related to it than to any other species.