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



Popelairia conversi aequatorialis Hartert, Nov. Zool., V, 1898, p. 494 (Chimbo, 

 crit.); Oberholser, Proc. U. S. Nat. Mus., XXIV, 1902, p. 342 (Santo 

 Domingo and Nanegal, western Ecuador, crit.). 



P[opelairea] conversi aequatorialis Hartert, Das Tierreich, 1900, p. 223. 



Popelairia conversii aequatorialis Ridgway, Bull. U. S. Nat. Mus., No. 50, V, 

 I9ii,p. 679. 



Range: Ecuador. 

 2: "Ecuador." 



Popelairia letitiae (Bourcier and Mulsant). Letitia's Thorn-bill. 



Trochilus letitiae Bourcier and Mulsant, Ann. Sci. Phys. et Nat. Lyon, IV, 



1852, p. 143 (Bolivia). 

 Gouldia letitiae Gould, Mon. Trochil., Ill, 1855, pi. 130; Elliot, Syn. Trochil., 



1879, p. 139. 

 Gouldia laetitiae Boucard, Gen. Humming Bds., 1893-95, P- 43- 

 Prymnacantha letitiae Salvin, Cat. Bds. Brit. Mus., XVI, 1892, p. 431. 

 P[opelairea] letitiae Hartert, Das Tierreich, 1900, p. 224. 

 Popelairiae letitiae Ridgway, Bull. U. S. Nat. Mus., No. 50, V, 191 1, p. 679, in 



key. 



Range: Bolivia. 



Genus DISCOSURA Bonaparte. 



Discosura Bonaparte, Comp. Av., 1850, p. 84 (Type Trochilus longicauda 



Gmelin). 

 Discura Reichenbach, Aufz. d. Col., 1854, p. 8 (Type T. longicauda). 



*Discosura longicauda {Gmelin). Racket Tail. 



Trochilus longicauda Gmelin, Syst. Nat., I, 1788, p. 496 (Cayenne).* 



Trochilus platurus Latham, Ind. Om., 1790, p. 3x7. 



Discura longicauda Gould, Mon. Trochil., Ill, 1858, pi. 126; Elliot, Syn. 



Trochil., 1900, p. 140; Salvin, Cat. Bds. Brit. Mus., XVI, 1892, p. 431. 

 Discosura longicauda Hellmayr, Nov. 2k3ol., XIII, 1906, p. 379; Snethlage, 



Bol. Mus. Goeldi, VIII, 1914, p. 205 (Cameta, Rio Tocantins, Brazil) ; Chubb, 



Bds. Brit. Guiana, I, 1916, p. 427. 

 D{iscosura\ longicauda Hartert, Das Tierreich, 1900, p. 224. 



Range: Guiana and Brazil. 

 2: "Brazil." 



Genus LODDIGIORNIS Bonaparte.*' 



Loddigesia Bonaparte, Consp. Av., 1850, p. 80 (Type Trochilus mirabilis Bour. 



cier). 

 Loddigiornis Bonaparte, Compt. Rend. Paris, XXX, April i, 1850, p. 381 (Type 



T. mirabilis). 



• Designated by Hellmayr, (I.e., 1906). 



'» Mr. Chubb (Bds. Brit. Guiana, I, 19 16, p. 429) has called attention to the fact 

 that Loddigiornis Bonaparte, April i, 1850, has priority over Loddigesia Bona- 

 parte after November, 1850. 



