BIBD8 OF NORTH AND MIDDLE AMERICA. 63 



Cotyle fulvipennis (not of Sclater, 1859) Salvin and Sclater, Ibis, 1860, 31 

 (Duefias, Guatemala). 



Stelgidopteryx fulvipennis Baird, Review Am. Birds, 1865, 316, part (Duefias, 

 Guatemala) . 



(?) Stelgidopteryx fulvipennis Salvin, Ibis, 1870, 109, 114 (Costa Rica) ; Proc. 

 Zool. Soc. Lend., 1870, 184 (Calovevora, Veragua). — Boucard, Proc. ZooL' 

 Soc. Lend., 1878, 67 (San Jos6, Costa Rica, Mar. to May). 



(?) Stelgidopteryx rujicollis fulvipennis Bangs, Proc. New Engl. Zool. Club, ii, July 

 31, 1901, 59, part (Guatemala; description). 



Stelgidopteryx fulvigula (not of Baird) Lawrence, Ann. Lye. N. Y., ix, 1868, 96 

 (Atiro, Costa Rica). 



Cotyle aerripennis (not Hirundo serripennis Audubon) Sclater and Salvin, Ibis, 

 1859, 13, 136 (Duefias, Guatemala; resident) . 



(?) Cotyle serripennis Owen, Ibis, 1861, 61 (San Geronimo, Guatemala, breeding; 

 descr. eggs). 



(?) Stelgidopteryx serripennis (not Hirundo serripennis Audubon) Salvin and God- 

 man, Biol. Centr.-Am., Aves, i, 1883, 237, part (Calovevora, Veragua; San 

 Ger6nimo, Rio Dulce, Ooban, Retalhuleu, San Jos6, etc., Guatemala). — 

 Shakpe, Cat. Birds Brit. Mus., x, 1885, 206, part (Coban, Guatemala). — 

 Zeledon, Anal. Mus. Nac. Costa Rica, i, 1887, 107 (Costa Rica). — Cherrie, 

 Auk, vii, 1890, 335 (San Jos6, Costa Rica; very common during rainy sea- 

 son); ix, 1892, 22 (San Jos6, Costa Rica, breeding abundantly). 



Stelgidopteryx serripennis Salvin and Godman, Biol. Centr.-Am., Aves, i, 1883, 

 237, part (Atiro, Costa Rica; Duefias, Guatemala). — Sharpe and Wyatt, 

 Mon. Hirund., 1894, 635, 653, part, pi. 125, lower fig. ( = adult). 



STELGIDOPTERYX RUFICOLLIS UROPYGIALIS (Lawrence). 

 PANAMA EOTIGH-WIlfGED SWALLOW. 



Similar to S. salvini, but rump conspicuously paler than back and 

 longest under tail-coverts with a large terminal or subterminal spot 

 of dusky or blackish. 



Ackdts {sexes aliki). — Pileum very dark sooty grayish brown or 

 sooty black; hindneck, back, and scapulars paler sooty grayish brown; 

 rump pale brownish gray, pale grayish brown or dull whitish, in 

 strong but not abrupt contrast with much darker color of back, etc. ; 

 upper tail-coverts dusky grayish brown margined with paler; wings 

 and tail sooty blackish, the tertials distinctly margined or edged with 

 white or pale grayish; chin and throat cinnamon-buff, ochraceous-buff, 

 cinnamon, or pale russet; chest, sides of breast, sides, flanks, axillars 

 and under wing-coverts pale grayish brown; rest of undor parts white, 

 the abdomen usually more or less strongly tinged with pale yellow, 

 sometimes decided primrose or almost naples yellow; two longer under 

 tail-coverts with exposed portion dusky or blackish, usually margined 

 or tipped with white or at least with a subterminal spot of dusky;" 

 bill black; iris brown; legs and feet black or dusky horn color. 



Young. — Similar to adults, but general color of upper parts more 

 sooty and broken by more or less distinct terminal margins to the 



"Sometimes the next longer coverts have a smaller dusky subterminal spot on 

 outer web. 



