364 BULLETIN 5 0, UNITED STATES NATIONAL MUSEUM 



CoKY, Publ. Field Mus Nat. Hist., No. 131, 1909, 469 (Fox Prairie, Richland 

 County, 111.). 



Asturina nitida plagiata Ridgway, Amer. Nat., viii, 1874, 239 (Rillito Creek, 

 neo,r Tucson, Ariz.); in Baird, Brewer, and Ride,way, Hist. North Amer. 

 Birds, iii, 1874, 246; Proc. U. S. Nat. Mus., iii, 1880, 194; Nom. North Amer. 

 Birds, 1881, No. 445; Bull. Illinois State Lab. Nat. Hist., No. 4, 1881, 189 

 (Fox Prairie, RicWand County, 111., Aug. 1871); Orn. Illinois, i, 1889, 462.— 

 Henshaw, Zool. Wheeler's Exped., 1875, 419, pi. 15 (Camp Lowell, Ariz.). — 

 ViSHER, Auk, xxvii, 1910, 281 (Pima County, Ariz., breeding in oak belt at 

 6,000 feet). — Swarth, Pacific Coast Avif., No. 10, 1914, 26 (Arizona; Santa 

 Cruz River Valley; not uncommon; breeds on Rillito Creek, Santa Mountains, 

 San Pedro River, and near Gila Bend); Proc. California Acad. Sci., ser. 4, 

 xviii, 1929, 294 (vicinity of Patagonia, Ariz.). — Swann, Synop. List. Accip., 

 pt. 2, 1919, 55, part. — Wyman and Burnell, Field Book Birds South- 

 western United States, 1925, 100 (descr.; characters). — Law, Condor, xxxi, 

 1929, 219 (Chiricahua Mountains, Ariz.). — Peters, Check-list Birds of 

 World, i, 1931, 240, part.- — Sutton and Burleigh, Occ. Pap. Mus. Zool., 

 Louisiana State Univ., No. 3, 1939, 26 (Tamaulipas, Victoria, G6mez Farias, 

 etc.); Wils. Bull., Iii, 1940, 223, in text (Tamazunchale, Mexico; uncom- 

 mon). — MoNSON, Condor, xliv, 1942, 222 (se. Arizona). 



Asturina plagata Coues, Check List North Amer. Birds, ed. 2, 1882, No. 527; 

 Key North Amer. Birds, ed. 2, 1884, 551. 



Aaturina nitida plagata Brewster, Bull. Nuttall Orn. Club, viii, 1883, 31 (Tucson, 

 Ariz.; habits; measurements in flesh). 



Asinriiia plagiata plagiata Miller and Griscom, Amer. Mus. Nov., No. 28, 1921, 

 4, part (Arizona, Tex., n. Mexico). — Swann, Synop. Accip., ed. 2, 1922, 

 90, part; Monogr. Birds Prey, i, 1930, 435 part (monogr.). — Griscom and 

 Crosby, Auk, xlii, 1925, 535 (Brownsville, Tex.). — American Ornitholo- 

 gists' Union, Check-list, ed. 4, 1931, 70. — Monson, Condor, xxxviii, 1936, 

 176, text (Arizona; Papago Indian Reservation; 1 rec). — Amadon and 

 Phillip, Auk, Ivi, 1939, 183. in text (Tucson, Ariz.; nest, descr.). 



Buteo nitida var. plagiata Ridgway, Ann. Lye. Nat. Hist., New York, x, 1874, 

 381 (Fox Prairie, Richland County, 111.). — Nelson, Bull. Essex Inst., viii, 

 1876, 151 (Illinois). 



Asturina plagiata maxima van Rossem, Condor, xxxii, 1930, 303 (San Javier, 

 Sonora; orig. descr.; distr.) ; Trans. San Diego Soc. Nat. Hist., vi, 1931, 243 

 (San Javier, Saric, Chinobampo, Guirocoba, and Magdalena; Sonora, 

 Mexico). — American Ornithologists' Union, Auk, Ixi, 1944, 445 (nomencl.). 



Buteo nitida maxima American Ornithologists' Union, Auk, Ixi, 1944, 445 

 (nomencl.) . 



Buteo nitidtis maximus van Ros.sem, Occ. Pap. Mus. Zool. Louisiana State Univ., 

 No. 21, 1945, 57 (Sonora; common summer vis.). — Neff, Condor, xlix, 1947, 

 33 (Sonora; e. of La Colorado). 



BUTEO NITIDUS MICRUS (Griscom) 



Costa Rican Gray Hawk 



Adult male. — Similar to that of Buteo nitidus plagiatus, but smaller; 

 tail with only one complete white bar and usually only traces of a 

 second one or even none at all; the underparts slightly darker by 

 virtue of the fact that the gray bars are a little wider, the white ones 



