Cited by authors as a synonyme for the sharp-skinned Hawk (_Accipiter fuscus_), which seems to be erroneous, though correct enough if reference only be made to Gmelin’s compilation of Pennant’s description. The latter, as quoted above, and which is the original, appears to apply to _Falco columbarius_ (Linn.), but not with sufficient accuracy to be without doubt, and we know of no bird at present inhabiting “the province of New York” that it entirely suits. 8. Aquila maculosa. Vieill., Ois d’Am. Sept., I. p. 28, pl. 3 bis. (1807.) Upper part of the head, nape, neck, and mantle, black; eyebrow white, bordered by a black line from the eye; space between the bill and eye and cere blue, the former with scattered hairs; iris yellow; throat and breast white, every feather with a longitudinal central stripe of black; abdomen black, many feathers having circular spots of white; tibia and under tail-coverts ferruginous, with central spots of brownish; rump and upper tail-coverts white, with transverse stripes of black; quills and tail leaden gray above, light bluish-gray beneath; feet orange; claws blackish. Total length, about 25 inches; wing, 16; tail, 10 inches. An excellent figure of this bird is given by Vieillot, as above, but which represents no species with which we are acquainted. In general appearance it resembles _Phalcobænus carunculatus_, Des Murs (Rev. et Mag. de Zool., April, 1853, p. 154), a South American species, of which specimens are in the collection of the Philadelphia Academy. Though given by Vieillot as a bird of North America (as above, and in Nouv. Dict., XXXII. p. 56), we suspect that he was mistaken. 9. Sparvius ardosiaceus. Vieill., Ency. Meth., III. p. 1274. (1823). Body above, bluish slate color; beneath, ferruginous, with transverse white bands; chin white; bill bluish-black; feet orange; cere and edges of the mouth dull green; quills and tail brownish-black; eyebrows dull white; tail slightly forked. North America. Possibly _Accipiter fuscus_, but we regard it as quite remarkable that Vieillot, at so late a date, should have again described that species, being undoubtedly well acquainted with North American birds. We recollect no bird which exactly suits this description. 10. Falco Bachmanii. Aud., Orn. Biog., V. p. 334. (1839, the date on the title-page of this volume is erroneously printed 1849.) “I have several times seen in South Carolina a Hawk flying, equal in size to _Falco lineatus_, and remarkable for the great breadth of its wings. It was of a uniform brown color, excepting the tail, which was barred with white. The same bird has also been repeatedly observed by my friend, Dr. Bachman, who feels assured of its being distinct from any other Hawk hitherto found in North America.” (Audubon, as above.) This is the entire and only description published and the species alluded to has never been identified, to our knowledge.