BIRDS OF NORTH AND MIDDLE AMERICA 375 



Adult female.— Wing 351-388 (370. 4); tail 227-253 (238. 4); culmen 

 from cere 27-28 (27.6); tarsus 80-91 (86.4); middle toe without 

 claw 51-56 (53. 5 mm.)." 



Range. — Kesident from southwestern California (Brawley, Palo 

 Verde, Colorado River); Arizona (Yuma, Pecks Lake, Tombstone, 

 San Bernardino Ranch) ; south to Baja California (San Quintin, 

 Ensenada, Miraflores, Cape San Lucas) ; Sonora; Sinaloa; and Nayarit; 

 wandering in the nonbreeding season to Guanajuato and to San 

 Luis Potosi. 



Type locality. — Laguna Dam, lower Colorado River, Imperial 

 County, Calif. 



Morphnus unicinctus Kennerly, Rep. Pacific R. R. Surv., 4, pt. 6, No. 1, 1856, 

 16 (Camp 134, "New Mexico," i.e. Arizona?). 



Craxirex unicinctus Kennerly, Rep. Pacific R. R. Surv., x, No. 3, 1859, 20 

 (Colorado River, Ariz.). 



Erythrocnema unicincta Sharpe, Cat. Birds Brit. Mus., i, 1874, 85, part (in 

 syn. ; southernmost North America, part). — Heine and Reichenow, Nom. 

 Mus. Hein. Orn., 1890, 273, part ("west-coast California"). 



Parabuteo unicinctus American Ornithologists' Union, Check-list, ed. 3, 1910, 

 157, part. — Sutton and Phillips, Condor, xliv, 1942, 59 (Papago Indian 

 Reservation, Ariz.). — Kent, Condor, xlvi, 1944, 129 (s. California). — Neff, 

 Condor, xlix, 1947, 33 (near Cornelio, Sonora). 



Craxirex harrisii Coues, Proc. Acad. Nat. Sci. Philadelphia, 1866, 49 (Arizona). — 

 Cooper, Orn. California, Land Birds, 1870, 493 (Colorado Valley near Fort 

 Mojave). 



Craxirex unicinctus var. harrisii Lawrence, Mem. Boston Soc. Nat. Hist., ii, 

 1874, 302, part (MazatMn, Sinaloa). 



Antenor unicinctus B harrisi Ridgway, U. S. Geol. and Geogr. Surv. Terr., 

 Bull. 2, No. 2, 1876, 162, 163, 165, part (monogr.). 



Antenor unicinctus harrisi Ridgway, Proc. U. S. Nat. Mus., iii, 1880, 193, part; 

 Nom. North Amer. Birds, 1881, No. 434, part. 



Antenor harrisi Gurney, List Diurn. Birds Prey, 1884, 71, part; Cat. Birds Prey, 

 1894, 25, part. 



Parabuteo unicinctus harrisi Ridgway, in Baird, Brewer, and Ridgway, Hist. 

 North Amer. Birds, iii, 1874, 250, part (Colorado River); in Belding, Proc. 

 U. S. Nat. Mus., V, 1882, 44 (Cape San Lucas, Lower California), 548 (San 

 Jose, Lower California); Man. North Amer. Birds, 1887, 229, part. — Belding, 

 Proc. U. S. Nat. Mus., v, 1882, 544 (Cape region, Lower California). — Scott, 

 Auk, iii, 1886, 422 (near Tucson, Ariz.).— Anthony, Zoe, iv, 1893, 233 

 (between Ensenada and Colnett and on San Pedro Mdrtir Mountains, Lower 

 California); Auk, xii, 1895, 137 (San Fernando, and between Rosario and 

 San Carlos, Lower California; breeding); Proc. California Acad. Sci., ser. 4, 

 xiv, 1925, 295 (near San Quintin Island, Mexico). — Bailey, Handb. Birds 

 Western United States, 1902, 154, part. — Brewster, Bull. Mus. Comp. ZooL, 

 xli, 1902, 82 (Cape region. Lower California; res.; habits). — Thayer and 

 Bangs, Condor, ix, 1907, 136 (Rosarita and Santa Ana, Lower California; 

 Mar.). — Grinnell, Pacific Coast Avif., No. 8, 1912, 10 (California); No. 11, 

 1915, 65 (near Ehrenberg, lower Colorado River; south of Palo Verde; 



" Nine specimens from Arizona, Baja California, Sonora, Guanajuato, and 

 San Luis Potosf. 



