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Show 142 GENUS BUSARELLUS, LAFRESNAYE. Busarellus LAFK. D'Orb. Diet. d'Hist. Nat. ii, 184* 2, 785- 6. Type, Falco nigrkolli* LATHAM. Icthyoborus KAITP, Contr. Orn. 1650, 76. Same type. CH.- General form and appearance of Buteogallus < equinocti< rti$. Bill, feet, and claws very strong; wings large ( but primaries short), and outstretched feet reaching beyond the end of the rather short, nearly even tail. Bill, cere, and nostril very similar to that of Pandion, but the culmen less arched, and the top of the cere elevated instead of depressed. Tarsus nearly twice the middle toe, with a frontal and posterior series of transverse scutelke, these sometimes fused into continuous plates. Lateral toes, nearly equal ( but the outer perceptibly the longer), the posterior a very little shorter than the inner, and the middle one only the distance of its terminal joint longer. Inferior surface of the toes with acute papillae, as in Pandion. Claws very strong, of normal shape, considerably graduated, and deeply grooved beneath. No trace of a web between the toes. Head normally feathered; the feathers, as well as those of the neck, lanceolate, the occipital ones somewhat elongated. Secondaries much developeu, and , very broad, fifteen in number. Primaries but little longer than the secondaries; third, fourth, or fifth longest, first shorter than the eighth; outer six with their inner webs very shallowly sinuated. Tail less than half the wing, even, or very slightly rounded. Plumes of the outer face of the tibiae short and close, as in Onychotes. This strongly- characterized and very remarkable genus exhibits a i striking analogy to Pandion in the very strong and slightly- graduated claws, the close feathering of the tibiae, the general form of the bill, and the sharp spicules of the toe- pads. It is said to be piscatorial in its habits, hence these modifications. It differs very essentially from Pandion, however, iu the deep grooving of the claws, the soft texture of the plumage, the buteoniue scutellation of the tarsi and toes, and indeed in all essential features. It is much more nearly related to the haliaetine group, especially to the remarkable Australian genus Gypok-tinia, from which, however, it is widely distinct, as it is from all American genera. But one species is thus fark nown. BUSARELLUS NIGRICOLLIS. Faloo nigricollis LATH. Ind. Orn. i, 1790, 35. Buteo nigricollis VIEILL. N. D. iv, 1816, 437.- GRAY, Gen. i, 1845, 15; Hand List, i, 1869, 9.- PUCHER. Rev. et Mag. Zool. 1850, 85.- BURM. Tli. Bras, ii, 1$ 56, 47.- SCHL. MIM. P.- B. Buteones, 1862, 17.- LAWK. Mem. Boston Soc. N. H. 1874, 302 ( N. W. Mexico; biography). Morphnus nigricollis GRAY, Gen. lii, App. 1849,1. Icthyoborus nigricollis KAUP, Contr. Orn. 1850, 76.- PELZ. Orn. Braa. 1871, 3, 394.- RIDGW. Pr. Boston Soc. N. H., May, 1873,69. Buteogallus nigricollis STRICKL. Oru. Syn. i, 1855, 43.- CASSIN, Pr. Ac. Nat. Sri I860, - ( Truando, N. G.) - SCL. < fc SALV. Nom. Neotr. 1873, 119. Busarellus nigricollis SHARIF, Cat. Ace. B. M. 1874, 211. Faloo busarellus DAUD. Tr. ii, 1800, 168 ( ex Levaill.) Circus busarellus VIEILL. Enc. M< Sth. iii, 1823,1212. Buteo busarellus V i a 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 VIEILL. N. D. iv, 1816,465. * Seco'nd aud fourth just appreciably shorter. |