Obs. The Caracara Eagle has been observed in Florida, and is an inhabitant also of Texas and Mexico. It walks on the ground with facility, and otherwise resembles the Vultures in its habits; and, like them, lives on dead animals for the greater part. The original edition of Molina, in which a scientific name is given to this bird for the first time since the adoption of the binomial nomenclature, we have not seen; but in his second edition, Preface, p. 1 (Bologna, 1810), it is stated to have been published in 1782. His name undoubtedly has priority. We are inclined to the opinion that this bird, and several more or less nearly allied species of South America, belong properly to the family of Vultures;—of all the habits of which they partake. This opinion is supported somewhat by Molina’s statement, that of the present species the female is the smaller (2d ed., p. 221), as Humboldt and others have observed of the Condor, and as appears to be the case in the family of Vultures, but not in that of the Falcons. V. GENUS MORPHNUS. Cuvier, Regne. Animal, I. p. 317. (1817.) URUBITINGA. Less., Rev. Zool., 1839, p. 132. SPIZOGERANUS. Kaup, Class., p. 120. (1844.) Size medium; bill rather long, abruptly curved at the tip, which is acute; edges of upper mandible festooned; wings and tail long; legs long; tarsi and toes strong, the former with wide transverse scales in front; claws strong. A genus of American species, inhabiting the southern portion of the continent. 1. Morphnus unicinctus. (Temm.) Harris’ Buzzard. Falco unicinctus. Temm., Pl. col., I. p. (no page—livraison 53, about 1827.) “Falco anthracinus. Licht.” Gray, Genera, I. p. 27. Buteo Harrisii. Aud., Orn. Biog., V. p. 30. (1839.) Polyborus tæniurus. Tschudy, Wiegm. Archiv., X. p. 263. (1844.) Temm., Pl. col., 313; Aud., B. of Am., pl. 392: oct. ed., I. pl. 5; Tschudy, Fauna Peruana Orn., pl. 1. Legs long, and with the feet robust; wings rather short; tail long. Adult. Shoulders, wing-coverts and tibia chestnut-red or bay; other parts very dark umber-brown; upper and under tail-coverts white; tail white at its base, and tipped with white; middle portion presenting the appearance of a very wide band, dark brownish-black, with a reddish or violet tinge. Younger. Upper-parts umber-brown, much mixed with fulvous; shoulders chestnut-red, with dark-brown spots; quills dark-brown; secondaries tipped with yellowish-white; entire under-parts yellowish-white, many feathers on the breast, sides and abdomen, with large oblong and circular spots of brown; tibiæ yellowish-white, with transverse irregular lines of light brownish-red; upper and under tail-coverts white; tail brown, with many bands of a deeper shade of the same color, and with the inner-webs yellowish and reddish-white, and having many narrow bands of dark-brown; base and tip of the tail yellowish-white.