754 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



adult male; length (skins), 258-304 (286); wing, 143-153.5 (146); 

 taU, 148-170 (157.8); culmen, 21-23 (22); tarsus, 13.5-15.5 (14.2); 

 inner anterior toe, 13.5-15 (14. 2). « 



Young male (nestling). — Similar to the adult female, but abdomen, 

 sides, and flanks grayish sooty passing into pale fulvous or buffy on 

 anal region, the under tail-coverts dull white and pale buffy with 

 basal portion dark sooty. 



Southwestern Costa Rica (San Mateo; Las Trojas; Pigres; Pozo 

 Azul de Pirris; Pozo del Rio Grande; El Pozo de Terraba; Boruca; 

 El General; Palmar) and western Panama (Divala; Bugaba; Bibal^z; 

 Veragua; Chiriqui). . 



Trogon bairdii Lawrence, Ann. Lye. Nat. Hist. N. Y., ix, 1870 (extras issued 

 April, 1868), 119, 120 (San Mateo, w. Costa Rica; coll. U. S. Nat. Mus.).— 

 Frantzius, Journ. fur Orn., 1869, 313 (Costa Rica).— Zeledon, Proc. U. S. 

 Nat. Mus., viii, 1885, 109 (Costa Rica); Anal. Mus. Nac. Costa Rica, i, 1887, 

 120 (Pozo Azul de Pirris and Las Trojas, s. w. Costa Rica). — Cherrie, Expl. 

 Zool. Merid. C. R., 1893, 47 (Palmar and Boruca, s. w. Costa Rica). — Ridg- 

 WAY, Condor, vii, 1905, 155, in text (near Pigres, w. Costa Rica). 



Trogon hairdi Salvin, Ibis, 1869, 316; Proc. Zool. Soc. Lond., 1870, 202 (Bugaba, 

 Panamd; descr. adult female). — Gould, Mon. Trog., ed. 2, 1875, pi. 23 and 

 text.— Grant, Cat. Birds Brit. Mus., xvii, 1892, 461 (Bugaba and Bibaldz, 

 Panamd). — Salvin and Godman, Biol. Centr.-Am., Aves, ii, 1896, 496. — 

 Bangs, Auk, xxiv, 1907, 294 (Boruca and Pozo del Rio Grande, s. w. Costa 

 Rica). — Carriker, Ann. Carnegie Mus., vi, 1910, 560 (s. w. Costa Rica; 

 habits). 



[Trogon] hairdi Sclater and Salvin, Nom. Av. Neotr., 1873, 104.— Sharpe, 

 Hand-list, ii, 1900, 148. 



Trogon clathratus (not of Salvin) Lawrence, Ann. Lye. N. Y., ix, 1868, 119 (San 

 Mateo, Costa Rica; descr. supposed female). — (?) Frantzius, Journ. fiir Om., 

 1869, 313 (Costa Rica). 



TROGON STRIGILATUS CHIONURUS (Sclater and Salvin). 



WHITE-TAILED TROGON. 



Adult male. — Head, neck, and upper chest black glossed with violet, 

 the lower chest and sides of breast dark metalhc bluish violet or violet- 

 blue ; back, scapulars, and upper rump brilliant metallic green, passing 

 into violet-blue on upper margin of back, lower rump, and upper tail- 



o Thirteen specimens. 



