326 Field Museum of Natural History — Zoology, Vol. XIII. 



Trogon chrysocklorus Pelzeln, Sitz. Ak. Wien, XX, 1856, pp. 496, 505 (Ypanema, 



Brazil)." 

 Trogon atricollis atricollis Hellmayr, Nov. ZooL, XIII, 1906, p. 380 (Pari 



District). 

 Trogon splendidus Bertoni, Av. Nuev. Paraguay, 1901, p. 35 (Alto Parand, 



Paraguay). 

 Trogon sulphureus Spix, Av. Bras., I, 1824-26, pi. 38, fig. I (male). 

 Trogon rufus rufus Hellmayr, Nov. ZooL, XVII, 1910, p. 387 (Rio Madeira); 



Helluayr, Abh. K. Bayer. Akad. Wiss., Munchen, XXVI, 2, 1912, p. 94 



(Pari District). 

 Trogonurus curucui curucui Ridgway, Bull. U. S, Nat. Mus., No. 50, V, 191 1, 



p. 764, in key; Bangs and Penard, Bull. Mus. Comp. Zool., LXII, No. 2, 



1918, p. 60 (Paramaribo, Cayenne). 



Range: South America (except in western Colombia and western 

 Ecuador) south to eastern Peru, Paraguay, northeastern Argentina 

 (Missiones), and the greater part of Brazil from Pard southward. 



3 : British Guiana. 



Trogonurus curucui cupreicauda** Chapman. Colombian Black- 

 throated Trogon. 



Trogonurus curucui cupreicauda Chapuan, Bull. Am. Mus. Nat. Hist., XXXIII, 

 1914, p. 606 (Bogado Choco, Colombia); Id., XXXVI, 1917, p. 315 (Alto 

 Bonito; Bogado; Juntas de Tamana; San Jos6; Barbacoas; Puerto Valdivia; 

 west of Honda, western Colombia). 



Range: Western Colombia in tropical zone from lower Magdalena 

 and lower Cauca Valleys to the coast; northwestern Ecuador. 



♦Trogonurus curucui tenellus (Cabanis). Graceful Trogon. 



Trogon tenellus Cabanis, Joum. fur Ornith., 1862, p. 173 (Costa Rica); Gould, 



Mon. Trogon., ed. 2, 1875, pi. 15 and text. 

 Trogon atricollis tenellus Richmond, Proc. U. S. Nat. Mus., XVI, 1893, p. 513 



(Nicaragua); Bangs, Auk, 1901, p. 360 (Panama); Id., 1907, p. 294 (Costa 



Rica). 

 Trogon atricollis Salvin and Godman, Biol. Centr.-Am., Aves, II, 1896, p. 493, 



part. 

 Race B, Trogon tenellus Grant, Cat. Bds. Brit. Mus., XVII, 1892, p. 458. 

 (?) Trogon chrysomelas Richmond, Proc. U. S. Nat. Mus., XVI, 1893, p. 513 



(Rio Escondito, Nicaragua).* 



Trogonurus curucui tenellus Ridgway, Bull. U. S. Nat. Mus., No. 50, V, 1911, 

 p. 781; Stone, Proc. Acad. Nat. Sci. Phila., 1918, p. 257 (Gatun, Panama 

 Canal Zone) . 



» Southern birds may prove separable on account of their somewhat larger size 

 and less golden upper parts (c/., Hellmayr, Nov. ZooL, XIII, 1906, p. 380). 



*> Trogonurus curucui cupreicauda Chapman: Similar to T. c. curucui, but exposed 

 upper portions of six inner tail feathers rich copper-bronze; bars of three outer pairs 

 of tail feathers wider; wing coverts more broadly barred; no white between green 

 breast and orange abdomen. 



"Cf., Ridgway (/. c), pp. 783-784, foot note. 



