164 BULLETIN 50, UNITED STATES NATIONAL MUSEUM 



distally margined with tawny or russet and those of the lower neck, 

 rump, and upper tail coverts barred basally with white. Entire 

 underparts white or cartridge buff, shading to cinnamon-buff on the 

 tibiae. Wings hair brown to fuscous above, pale neutral gray below, 

 white basally toward the inner v^ebs, barred with fuscous-black. 

 TaU fuscous to fuscous-black, basally white, tipped with white, and 

 crossed by three or four narrow bands of white more or less shaded, 

 mottled, or marked, with hair brown, particularly on the irmermost 

 rectrices which are often uniform hair brown. Tawny-breasted 

 variety: Similar to the above, but the entire underparts light ochrace- 

 ous tawny. 



Immature female. — Similar to the immature male (both varieties), 

 but somewhat larger; his straw yellow; cere olive-yellow; bare skin 

 around eye chrome yellow; feet and bill as in adult male ''Cherrie). 



Natal down. — Apparently unknown. 



Adult male.—Wmg 200-215 (204.8); tail 172.5-180 (175.6); culmen 

 from cere 14.5-15.8 (15.2); tarsus 56.5-63 (60.2); middle toe without 

 claw 34.5-40 (37.5 mm).^^ 



Adult female.— Wing 238-243 (240.5); tail 203.5-204.5 (204); 

 culmen from cere 18-19.5 (18.7); tarsus 68-69 (68.5); middle toe 

 without claw 42.5-46 (44.3 mm)." 



Range. — Quintana Roo, Yucatdn, south through Honduras, Guate- 

 mala, Nicaragua, Costa Rica, and Panama to Venezuela, British, 

 Dutch, and French Guiana, the Amazonia district of Brazil (Santa- 

 rem), Colombia, and Ecuador to eastern and northwestern Peru 

 (Santa Cruz, Yurimaguas, Cuteroo, Bellavista, Perico). In the 

 mountainous areas of Colombia, Ecuador, and Peru, it is restricted 

 to the tropical and subtropical zones. 



Type locality. — Cayenne. 



Sparvivs bicolor Vieillot, Nouv. Diet. Hist. Xat., x, 1817, 325 (Cayenne) ; 

 Encycl. M6th., iii, 1823, 1265.— Pucheran, Rev. Mag. Zool., ii, 1850, 92 

 (crit. on type). — Hartlaub, Journ. fur Orn., 1855, 419 (crit. on type). 



Cooperastur bicolor Bonaparte, Rev. Mag. Zool., vi, 1854, 538. — Gurnet, Cat. 

 Birds Prey, 1894, 22. — Berlepsch and Hartert, Nov. Zool., ix, 1902, 112 

 (Altagracia, Quiribana de Caicara, and Caicara, Venezuela; fresh colors of 

 unfeathered parts). — Berlepsch, Nov. Zool,, xv, 1908, 291 (Cayenne). 



Accipiter bicolor Strickland, Orn. Syn., i, 1855, 110. — Gray, Hand-list, i, 1869, 

 33, No. 318.— ScLATER and Salvin, Exotic Orn., pt. 9, 1867, 137, pi. 69; 

 Proc. Zool. Soc. London, 1869, 252 (Maruria, Venezuela); 1870, 782 (Merida, 

 Venezuela), 838 (coast Honduras); 1873, 303 (Santa Cruz, e. Peru); Nom. 

 Av. Neotr., 1873, 120, part (Central America to Amazonia); Proc. Zool. Soc. 

 London, 1879, 540 (Rem^dios, Antioquia, Colombia). — Salvin, Proc. Zool. 

 Soc. London, 1870, 215 (Chitra, Boquata de Chitra, Calov6bora, and Volcdn 

 de Chiriquf, Panama) ; Ibis, 1886, 75 (Bartica Grove and Roraima, 3,000 feet, 



88 Five specimens from Costa Rica, Panama, and Peru (Perico). 

 '■ Two specimens, Costa Rica and Peru (Perico). 



