236 BULLETIN 5 0, UNITED STATES NATIONAL MUSEUM 



rence in sw. part; 1 record from sw. Calcasieu Parish, Nov. 18, 1888;. — 

 CoTTAM and Knappen, Auk, Ivi, 1939, 150, in text (4 specs.; food habits). — 

 Sutton and Burleigh, Occ. Pap. Mus. Zool. Louisiana State Univ., No. 3, 

 1939, 26 (ne. Mexico; Monterrey, Nuevo Le6n; not common; 2 records). — 

 Ghinnell and Miller, Pacific Coast Avif., No. 27, 1944, 561 (California; 

 hypothetical). — Hill, Auk, Ixi, 1944, 230 (meas., sex dimorphism). — 

 McAtee, Wils. Bull., Ivi, 1944, 154 (Gulf State migr.).— van Rossem, Occ. 

 Pap. Mus. Zool. Louisiana State Uuiv., No. 21, 1945, 55 (Sonora; status un- 

 certain; 3 seen). — Neff, Condor, xlix, 1947,!32''(near AguafCaliente, Sonora). 



Archibuteo ferriigineus (not Falco ferrugineus Lichtenstein) Sennett, U. S. Geol. 

 and Geogr. Surv. Terr., Bull. 4, No. 1, 1878, 43 (Brownsville, Tex.; descr. 

 nest and eggs). 



Buteo albicaudatus sennetti Allen, Bull. Amer. Mus. Nat. Hist., v, 1893, 144 

 (lower Rio Grande Valley, Tex.; coll. G. B. Sennett). — American Ornitholo- 

 gists' Union, Auk, x, 1894, 48; Check-list, ed. 2, 1895, 132; ed. 3, 1910, 159.— 

 Ridgway, Man. North Amer. Birds, ed. 2, 1896, 238. — Breninger, Auk, 

 xvi, 1899, 352 (between Florence and Redrock, Ariz., breeding; Phoenix, 

 Ariz.). — Carroll, Auk, xvii, 1900, 342 (Refugio County, Tex., common 

 resident). — Bailey, Handbook Birds Western United States, 1902, 158 

 (descr.; distr.). — Carriker, Ann. Carnegie Mus., vi. 1910, 456 (San Josd, 

 Cerro de Santa Maria, and Laguna de Ochomogo, Costa Rica). — Swarth, 

 Pacific Coast Avif., No. 10, 1914, 26 (Arizona; 2 records; Phoenix, and be- 

 tween Florence and Red Rock; nest.). — Grinnell, Pacific Coast Avif., 

 No. 11, 1915, 181 (California; 1 doubtful record). — Smith, Condor, xx, 1918, 

 212, in text (becoming rare in lower Rio Grande Valley). — Swann, Synopt. 

 List Accip., pt. 2, 1919, 52; Synop. Accip., ed. 2, 1922, 86 (Texas to Colombia, 

 Venezuela, and Amazon Valley) ; Monogr. Birds Prey, i, 1928, 418 (mono- 

 gr.). — Friedmann, Auk, xlii, 1925, 545 (Lower Rio Grande Valley, Tex.; 

 nesting). — Griscom and Crosby, Auk, xhi, 1925, 535 (Brownsville, Tex., 

 region; status). — Stresemann, Journ. fiir Orn., Ixxiii, 1925, 310, in text 

 (crit. ; characters) . — Palmer, Condor, xxx, 1928, 295, in text (patronymics). — 

 Griscom, Bull. Amer. Mus. Nat. Hist., Ixiv, 1932, 152 (distr.; Guatemala). — 

 Guthrie, Wils. Bull., xliv, 1932, 103, in text (eats snakes). 



Tachyfriorchis senneUi Sharpe, Hand-list, i, 1899, 255 (Texas to Central America). 



Tachytriorchis albicaudatus sennetti Oberholser, Auk, xxxv, 1918, 207: xxxvi, 

 1919, 568; xxxvii, 1920, 280.— de Laubenfels, Wils. Bull., xxxvi, 1924, 169 

 (Brownsville, Tex.). 



Buteo albicaudatus exiguus (not of Chapman) Swann, Auk, xxxviii, 1921, 361 

 (M6rida, Venezuela). 



Buteo albicaudatus subsp. Todd and Carriker, Ann. Carnegie Mus., xiv, 1922, 

 150 (Bonda, Santa Marta, Colombia). 



Buteo albicaudatus cnlonus (not of Bcrlepsch) Lehmann, Rev. Univ. Cauca, vi, 

 1945, 99, part (Santa Marta and La Guajira, Colombia;. 



Subgenus BuTEO Lac^pfede 



Rather small to large Buteones (wing about 255-470 mm.) with 

 longest primary exceeding distal secondary by very nearly one-third 

 to (usually) more than one-third the length of wing, with tarsus less 

 than twice as long as middle toe, and with three or four outer primaries 

 abruptly emarginated on inner web. 



Bill moderate in size to rather large, the culmen one-fourth to more 

 than one-third as long as tarsus, decidedly shorter to slightly longer 



