This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1876 Excerpt: ...Levaill.) Circus busarellus Vieill. Enc. Meth. iii, 1823,1212. Buteo busarellus Vig. Zool. Journ. i, 1824, 340.--Gray, Gen. i, 1815, 15. Buteogallus busarellus Bonap. Consp. i, 1850, 17. Falco melanobronchos Shaw, Gen. Zool. vii, 1809, 167. Circus leucocephalus Vieiix. N. D. iv, 1816,465. Second and fourth just appreciably shorter. Aquila milvoides Spix, Av. Bras, i, 1824, pi. Id. Morphnus milvoides Cuv. Reg. Au. i, 1829, 330. Ealiaetus milvoides Gray, List. Ace. B. M. 1844,12; Gen. i, 1845, 17. Busard roux de Cayenne Maud. Enc. M5th. 1784, 543. Black-necked Falcon Lath. Gen. Synop. Suppl. i, 1787, 30. Le Buserai Levall. Ois. d'Afr. i, 1799,84, pi. 20.--Sund. Crit. om Levaill. 20 U53, '25. Buzzaret Lath. Gen. Syn. Suppl. ii, 1801, 32. Cabeza blanca Azara, Pax. Par., i, 1802, 78. Hob.--Tropical America, south to Paraguay, north. to Mazatlan, Western Mexico. Wing, 15.00-17.50; tail, 7.30-8.50; culmen, 1.10-1.30; tarsus, 3.003.50; middle toe, 1.75-2.20. Adult: --General color deep rufous, becoming white on the head; a transverse jugular patch, secondaries, primaries, and terminal half of the tail black. Feathers of the upper surface, including the pileum and nape, with shaft-streaks of black, these widening into stripes on the scapulars. Basal half of the tail usually more or less barred with blackespecially on the inner webs), and. the tip sometimes narrowly rufous. Young: --Head, neck, tail, and primaries as in the adult. Whole breast blackish; tibia and crissum barred with black. Upper parts thickly barred with black, which prevails on the dorsal regiou. A dusky stripe from the eye across the auriculars. Mexican specimens are larger and lighter-colored than those from South America. List of specimens in United States National Museum. Other specimens examined..