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Show 162 Urubitinga ( Antenor) unicincta RIDGW. Pr. Boston Soc. N. H. May, 1873, 93. Parabuteo unicinctus EIDGW. B. B. & R. Hist. N. Am. B. iii, 1674, 249, 250. Erythrocnema unicincta SHARPK, Cat. Ace. B. M. 1874, 85. Polyborus tceniurus T$ CHUDI, Arch. f. Naturg. 1844, 263; Fauna Per. 1844, pi. 1. Hab.- South America generally, south to Chili and Buenos Ayres. fi. harrisi, Aud. Falco harrisii AUD. B. Am. 1831, pi. cucxeii; Orn. Biog. v, 1849, 30. . Buteo harrisii BONAP. Comp. List, 1833, 3.- AUD. Synop. 1839, 5.- DE KAY Zool. X. Y. ii, 1844, 11. Craxirex harrisii COUES, Pr. A. N. S. Phil. 1806, 49.- COOPER, Orn. Cal. i, 1^ 70,493. Buteo unicinctus var. harrisii RIDGW. Cones' Key, 1872, 215.-- COUES, Check Liat N. Am. B. 1 « 73, 69, No. 348.- LAWR. Mem. Boston Soc. X. H. ii, 1674, 302 ( X. W. I Mexico). ] Antenor unicinctus var. harrisi RIDGW. B. B. & R. Hist. N. Am. B. iii, 1874, 250. Parabuteo unicinctus var. harrisi RIDGW. B. B. & R. Hist. N. Am. B. iii, 1874, 250. Craxirex unicinctus CASS. B. N. Am. 1858, 46 ( not of Bonap. 1854, ex Temm. 1820).- BAIRD, Cat. N. Am. B. 1859, No. 46.- DRESSER, Ibis, 1865,329.- COUES, Pr. A. N. i 8. PfaU. 1866,13.- SALVIN, P. Z. 8.1867, 158 ( Veragua). Erythrocnema unicincta SUARPE, Cat. Ace. B. M. 1874, 85 ( in part). Bab.- Middle America, from the southern border of the United States ( Louisiana to Lower California) south to Panama (!). Wing, 11. C5- 14.60; tail, 9.00- 11.00; culmen, 0.82- 1.10; tarsus, 2.78- 3.75; middle toe, 1.52- 2.00. Adult:- General color brownish- black or I blackish- brown, uniform or slightly variegated by light spotting; the lesser wing- coverts and tibiae deep rufous or chestnut. Tail black; the i end and base white, as are also the tail- coverts. Young:- Plumage greatly variegated. Above blackish- brown, the feathers edged with j rusty; head and neck streaked with pale ochraceous. Lower parts pale ochraceous or yellowish- white, the breast aud abdomen with longitud- , inal ovoid spots of blackish; tibiae with transverse bars of dark rusty; j lower tail- coverts with black shaft- streaks. Lesser wing- covert region only washed with rufous. Tail grayish- brown, whitish at the tip, and crossed by narrow bands of dusky. a. unicinctus. Adult, with the blackish more or less broken up by lighter spotting or streaking; tibiae barred rufous and ochraceous. Wing, 11.65- 14.60; tail, 9.00- 10.50 ; culmen, 0.82- 1.02; tarsus, 2.78- 3.40; middle toe, 1.52- 1.85. Adult (!) female ( No. 48814, Santiago, Chile):- Prevailing color brownish- black, broken by white streaks on the cheeks and throat, white borders and concealed spots on the abdomen, and ochraceous edges to feathers of the central portion of the breast. Kemiges with a narrow terminal border of white. Wing- coverts mostly deep ferruginous- rufous, nearly uniform and almost chestnut iu tint on the lesser coverts, which have dusky shaft- streaks, but much broken by a dusky spotting ou the middle and greater coverts, where the central portion of each feather is uniform blackish. Lining of the wing mostly ferruginous, but this broken by white and dusky spotting. Tibiff ochraceous, irregularly barred with rusty- rufous, these bars suffused into a nearly continuous wash of the latter color on the outer surface. Upper tail- coverts and crissum immaculate white. Tail uniform black, the extreme base and a sharply- defined terminal band, about one inch broad, pure white; the inner webs of the feathers more or less mottled with grayish- brown, the white at the base extending farther from the roots of the feathers. Inner webs of primaries white anterior to their ernar-gination, relieved by indications of dusky bars, the remaining portiou grayish- dusky, with irregular or broken blackish bars. Young ( No. |