BIRDS OF NORTH AND MIDDLE AMERICA 79 



Juvenal (sexes alike). — Similar to adult, but with the feathers of the 

 hind part of the crown and the occiput tipped with pale and rather 

 ashy fulvous; the white nuchal collar tinged with tawny fulvous; the 

 feathers of the entire back (interscapulars to rump) and the scapulars 

 and inner secondaries washed subterminally with dull bister which 

 shows through its blotches; the white tips of the inner secondaries 

 somewhat suffused with pale fulvous tawny in some cases. 



Natal down. — "White below; above pale vinaceous cinnamon, the 

 wings being darkest and the neck and head palest; there is a small 

 dusty spot above the eye and the loral region is dusky blackish" 

 (Cherrie) . 



Adult raale.—Wmg 141-154 (150); tail 94-98 (95.8); culmcn from 

 cere 13-14 (13.4); tarsus 28-30 (28.8); middle toe without claw 19-21 

 (20 cm.). "8 



Adult jemale. Wing 150-163 (158); tail 95-102 (99.3); culmen from 

 cere 14 (14); tarsus 31-32 (31.2); middle toe without claw 20-22 

 (20.9 mm.).-'« 



Bange. — Resident in thinly wooded savanna regions of western 

 Nicaragua (Le6n), where it is said to be common, and again from the 

 Santa Marta region of Colombia (Rio Frio; Bonda; Gaira; Mamatuco; 

 Dibulla; Fundaci6n) east through Venezuela (Agua de Salada; Maru- 

 aria; Ciudad Bolivar; Altagracia; Caicara; Quiribana de Caicara; 

 San Julidn; Nevada; Valle) and Margarita Island and Trinidad, to 

 French Guiana and the higher interior of British Guiana (Merume 

 Mountains; Annai; Upper Takutu Mountains; Rupununi Savannas); 

 south to northern Brazil (Miritiba ; Bona Vista ;Barro do Rio Grande; 

 Santarem; Rio Tapaj6z; not crossing the northern bank of the 

 Amazon). 



Type locality. — Le6n, western Nicaragua. 



Elanus swainsoni Kaup, Isis, 1847, 109, part. 



Elanus swainsonii Kaup, in Jardine's Contr. Orn., 1850, 59, part. — Schlegel, 

 Mus. Pay-Bas, ii, No. 7, livr. 2, 1863, 9, part (Colombia; Brit. Guiana). 



Gampsonyx swainsonii Cabanis, in Schomburgk's Reis. Brit. Guiana, iii, 1848, 

 735.— Hellmayr, Nov. Zool., xvii, 1910, 413, part ("Central America"). 



Gampsonyx swainsoni Gray, List Spec. Brit. Mus., pt. 1, Accip., ed. 2, 1848, 46, 

 part. — ScLATER and Salvin, Proc. Zool. Soc. London, 1866, 252 (Maruaria, 

 Venezuela); Nom. Av. Neotr., 1873, 121, part.— Pelzeln, Orn. Bras., Abth.' 

 1, 1868, 6, Abth. 4, 1870, 398 (n. Brazil).— Finsch, Proc. Zool. Soc. London, 

 1870, 557 (Trinidad; crit.). — Sharpe, Cat. Birds Brit. Mus., i, 1874, 340, 

 part (Trinidad); Hand-list, i, 1899, 270, part.— Ridgway, U. S. Geol. and 

 Geogr. Surv. Terr., ser. 2, Bull. 2, 1876, 151, part (Sabanilla, Colombia).— 

 Gurney, Ibis, 1879, 330, in text, part (Santa Marta, Colombia; descr. 

 young); List Diurn. Birds Prey, 1884, 83, part; Cat. Birds Prey, 1894, 26, 

 part.— S alvin, Ibis, 1886, 77 (Merume Mountains, Brit. Guiana); Bull. Brit. 



*^ Five specimens from Venezuela and northern Brazil (Santarem) . 



*^ Six specimens from Venezuela (San Julidn) and northern Brazil (Santar6m) . 



