502 BULLETIN" 50, UNITED STATES NATIONAL MUSEUM. 



Stenopsis cayennensis Lowe, Ibis, 1907, 588 (Margarita I.). 



Stenopsis cayennensis insularis Richmond, Proc. Biol. Soc. Wash., xv, June 25, 



1902, 159 (Curagao; coll. U. S. Nat. Mus.). 

 S[tenopsis] insularis Ridgway, Proc. Biol. Soc. Wash., xxi, Oct. 20, 1908, 195, in 



text. 



STENOPSIS CAYENNENSIS ALBICAUDA (Lawrence). 



WHITE-TAILED STENOPSIS. 



Differing from S. c. insularis in the much darker coloration of the 

 adult male, wliich has the middle rectrices more distmctly barred, 

 the crown much more broadly streaked, and the scapulars more 

 heavily spotted with black, and the general color of the under parts 

 deep buff instead of nearly pure wliite. Differs from S. c. cayennensis 

 in strongly buffy and much less heavily barred under parts." Adult 

 female apparently not with certainty distinguishable from that of 

 other forms. 



Adult male.—Lengih (skins), 210-220 (215); wing, 138-144 (141); 

 tail, 116.5-120 (118.2); exposed culmen, 12; tarsus, 15.5-16.5 (16); 

 middle toe, 15-16 (15.5)^ 



Adult female. —Length (skins), 202-205 (203.5); wing, 138.5-142 

 (140.2); tail, 107-108.5 (107.2); exposed culmen, 12-13 (12.5); 

 tarsus, 16; middle toe, 15.5.*' 



Costa Rica (Talamanca; Rio Frio; Jimenez; Azahar de Cartago; 

 Miravalles; Bebedero; Pozo Azul dePirrls) and Panama (Calovevora, 

 Veragua; Nata, Code; Sabana de Panama). Northern Colombia 

 (Barranquilla) ? 



Stenopsis albicauda Lawrence, Ann. Lye. Nat. Hist. N. Y., xi, nos. 3-4, Feb., 

 1875, 89 (Talamanca, e. Costa Rica; coll. U. S. Nat. Mus.). — Zeledon, Anal. 

 Mus. Nac. Costa Rica, i, 1887, 120. — Carriker, Ann. Carnegie Mus., vi, 1910, 

 503 (Miravalles, n. w. Costa Rica; crit.; descr. female). 



Stenopsis albicauda? Richmond, Proc. U. S. Nat. Mus., xvi, 1893, 515 (Rio Frio, 

 Costa Rica (seen but not collected). 



Stenopsis cayennensis (not Caprimulgus cayennensis Gmelin) Salvin, Proc. 

 Zool. Soc. Lond., 1870, 204 (Calovevora, Veragua; crit.). — Hartert, Cat. 

 Birds Brit. Mus., xvi, 1892, 583, part. — Salvin and Godman, Biol. Centr.-Am. 

 Aves, ii, 1894, 392, part (Talamanca, Costa Rica; Calovevora, Panama). — 

 Thayer and Bangs, Bull. Mus. Comp. Zool., xlvi, 1906, 216 (Sabana de 

 Panama). — Carriker, Ann. Carnegie Mus., \a, 1910, 502 (Jimenez, Bebe- 

 dero, La Candelaria, Pozo Azul de Pirris, and Azahar de Cartago, Costa 

 Rica; crit.). 



S[tenopsis'\ cayennensis Hartert, Tierreich, Podarg., Caj)rim., Macropt., 1897, 

 35, part. 



[Stenopsis'] cayennensis Sharpe, Hand-list, ii, 1900, 83, part (Costa Rica; Panama). 



a If I am right in referring an adult male from Panama (near City of Panama) to 

 S. c. albicauda, the lateral rectrices of this form are sometimes crossed by an oblique 

 band of dusky, as in S. c. cayennensis and other subspecies. In the type, however, 

 there is no trace of this band on any of the three outer rectrices. 

 , b Two specimens (one each from Porto Rica and Panama.) 



c Two Bpecimens (one each from Costa Rica and Panama). 



