471 



(rymnops aquiUnus Spix, Av. Bras, i, 1824, 11. 

 Polt/borus aquilinus Less. Man. Orn. i, 1828, 88. 

 Falco formosits Lath. lad. Orn. i-, 1790, 33; Gen. Hist, i, 1821, 260 (fide 

 Shaupe, 1. c). — Shaw & Nodd. Nat. Misc. xii, pi. 485.— Shaw, Zool. vii, 

 1812, 159. 

 Ibijcter formosus Felx. Verb. z.-b. Ges. Wien, 18o2, 134 ; Orn. Bras. 1871, 2, 392.— 

 ScL. & Salv. Noni. Neotr. 1873, 122. 

 Falco nudicolUs Daud. Traite, ii, 1800, 79, 177. 



Milvago nudicolUs Burm. Th. Bras, ii, 1856, 37. 

 liyctei' leucoc/aster ViKit.h. Gal. O'ls. 1825, pi. 6. — Swains. Classif. ii, 1837, 209. — Less 

 Traits, 1831, 33.— Bonap. Consp. i, 1850, 12. 

 Aigle d' Anwrique Buff. PL Enl. i, 417. 

 Eed-throafed falcon Lath. Syuop. i, 1781, 97. 



Hal). — Tropical America, north to Guatemala and Honduras, south to 

 Eastern Brazil and Ecuador. Veraguaand Para (Sharpe). 



Descriptions. 



Wing, 13.70-16.G0;tai],9.S0-11.70;culmen,0.90-1.205tarsus,2.0o-2.60,• 

 middle toe, 1.70-2.05. 



Adult. — Uniform glossy black, with a dull reflection of bluish-green; 

 feathers on the sides of the neck edged with grayish-white beneath the 

 surface. Abdomen, tibiae, and crissum immaculate pure white. Bill 

 deep maize-yellow, the base and cere more olivaceous: naked skin of 

 throat, etc., deep red; feet coral-red; claws black. (Colors of fresh speci- 

 mens.) 



Remarlis. 



Two specimens from "Brazil," in the American Musuem at Central 

 Park, IS'ew York, labeled '■'■ Pileaius Max," seem to be larger and more 

 brightly-colored than the average of more northern examples; but the 

 differences are very slight. Tbey measure as follows : Wing, 14.70-16.60; 

 tail, 11.70; culmen, 1.08-1.20; tarsus, 2.30-2.60; middle toe, 1.95-2.05. 

 They probably correspond with I. forniQsus Pelz. {ex Lath.) — (See 

 Sharpe, 1. c. 36, foot-note.) 



List of sjyecimens in the United States Isational Museum. 



o o 



16805 

 17786 

 17787 

 17788 

 17789 

 41253 

 50662 

 53161 

 54020 

 54021 

 62134 

 64933 

 64934 

 64935 

 64936 

 64937 

 67861 

 67878 



2717 

 564 

 609 

 304 

 608 

 610 

 115 

 137 



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Locality. 



Panama Eailroad 



New Granada (Trviando) 



New Granada 



do 



do 



Costa Kica 



Ecuador (Guayaquil) 



Costa Rica 



Panama 



do 



Chiriqui 



Costa Rica 



do 



do 



do 



do 



Costa Rica (Talamanca) . 

 do 



When col- 

 lected. 



June 6, 1865 



May— ,1868 



From whom received. 



J. McLeannan. 



A. Schott 



do 



do 



do 



J. Carmiol 



A. Destruge . . . 

 M. L. Calleja.. 

 J. McLeannan. 



do 



O. Salvin , 



W. M. Gahb.. 



do 



do 



do 



do 



do 



do 



Nature of 

 specimen. 



M. 



