BIRDS OF NORTH AND MIDDLE AMERICA 607 



Acad. Nat. Sci. Philadelphia, xciv, 1942, 91 (Cuba; common names). — 

 Davis, Wils. Bull., liii, 1941, 38 (Cienfuegos, Cuba).— Blake and Hanson, 

 Publ. Field Mus. Nat. Hist., zool. ser., xxii, 1942, 526 (Michoacdn; Apatzin- 

 gdn; spec). — Grinnell and Miller, Pacific Coast Avif., No. 27, 1944, 561 

 (Cahfornia; hypothetical). 



Caracara plancus auduboni Hellmatr and Conover, Cat. Birds Amer., pt. 1, 

 No. 4, 1949, 286. 



Polybonis cheriway ammophilus van Rossem, Ann. Mag. Nat. Hist., ser. 11, iv, 

 1939, 441 (Tesia, Sonora; s. Arizona to Lower California); Occ. Pap. Mus. 

 Zool. Louisiana State Univ., No. 21, 1945, 62 (Sonora; common res.). 



Caracara plancus amviophilus Hellmayr and Conover, Cat. Birds Amer., pt. 1, 

 No. 4, 1949, 285. 



POLYBOEUS CHERIWAY CHERIWAY (Jacquin) 



Venezuelan Caracara 



Adult (sexes alike) . — Similar to that of Polyhorus cheriway audubonii, 

 but the dark parts darker, the fuscous to dark fuscous of the latter 

 form replaced by very dark fuscous-black to black. 



Immature. — Indistinguishable from that of P. c. audubonii. 



Juvenal. — Indistinguishable from that of P. c. audubonii. 



Natal down. — None seen; probably Kke that of P. c. audubonii. 



Adult ma/c— Wing 381-400 (391.5) ; tail 200-226 (219) ; culmen from 

 cere 30-33 (32); tarsus 90-93 (91.5); middle toe without claw 50-53 

 (51.5 mm.). 21 



Adult female.— Wmg 368-395 (382); tail 200-221 (215.5); culmen 

 from cere 30-34 (32); tarsus 88-92 (90.5); middle toe without claw 

 50.5-53 (52 mm.) .22 



Range. — Resident from the Pearl Islands, Bay of Panama, and 

 Darien, Panama, south through Colombia (Bogota, Bonda, Bucara- 

 manga, Fundaci6n, La Manuelita, Puerto Caiman, Rio Frio, Rio 

 Negro, Valencia) ; Venezuela (Valencia, Guarita, Caicara, Altagracia, 

 Orinoco Valley, Guarico, Apure, Marurie, Angostura), and the 

 islands of Trinidad, Aruba, Curasao, Bonaire, and Margarita Island 

 east to British Guiana (Quitaro River, Georgetowai, upper Takutu 

 Mountains, Abary River) and Dutch Guiana; south to northern Brazil 

 (Santarem, Piauliy; lower Amazon River); Ecuador (Puna Island, 

 Babahoyo, Ca5-ambe, El Troje, Ibarra, Vinces, Puntilla de Santa 

 Elena, Coraz6n, Carapungo (8,500 feet!), Daule, Zaruma, Alamor, 

 Quito Valley) ; and Peru (Perico) . 



Type locality. — Aruba and coast of Venezuela. 



Falco cheriway Jacquin, Beitr., 1784, 17, pi. 4 (Aruba and coast of Venezuela). — 

 Gmelin, Syst. Nat., i, pt. 1, 1788, 254.— Daudin, Traits d'Orn., ii, 1800, 42.— 

 Vieillot, Nouv. Diet. Hist. Nat., v, 1816, 259.— Lesson, Traits d'Orn., 1831, 

 34 (crit.). 



21 Five specimens from Venezuela, Colombia, and Ecuador. 



22 Six specimens from Venezuela, Colombia, Ecuador, and Brazil. 



