174 Field Museum of Natural History — ^Zoology, Vol. XIII. 



Leucippus chionogaster longirostris* (Schliiter). Argentine White- 

 throat. 

 Leucippus leucogaster longirostris Schluter, Falco, Halle, IX, 1913, p. 42 (Prov. 



of Salta, Argentine). 

 Range: Argentine. 



Leucippus pallidus Taczanowski. Peruvian White-throat. 



Leucippus pallidus Taczanowski, Proc. Zool. Soc. Lond., 1874, p. 542 (Huanta, 

 Peru); Id., Orn. Peru, I, 1884, p. 402; Elliot, Ibis, 1876, p. 9, crit.; Salvin 

 Cat. Bds. Brit. Mus., XVI, 1892, p. 201. 



Range: Peru. 



Leucippus viridicauda Berlepsch. Green-tailed White-throat. 



Leucippus viridcauda Berlepsch, Ibis, 1883, p. 493 (Huiro, Peru); Salvin, Cat. 

 Bds. Brit. Mus., XVI, 1892, p. 202. 



Range : Peru. 

 *Leucippus fallax fallax {Bourc. and Muls.). Buff-breasted White 



THROAT. 

 Trochilus fallax Bourcier and Mulsant, Ann. Soc. Agric. Lyon, VI, 1843, p. 44 



(Colombia). 

 Doleromya fallax Elliot, Syn. Trochil., 1879, p. 9; Salvin, Cat. Bds. Brit. Mus., 



XVI, 1892, p. 177. 

 Leucippus fallax Ridgway, Bull. U. S. Nat. Mus., No. 50, V, 191 1, p. 305, footnote. 



Range: North coast of Colombia and Venezuela. 



5: Venezuela (Caracas 3, Maracaibo i, and Rio Aurare i). 



Leucippus fallax richmondi'' Cory. Richmond's White-throat. 



Leucippus fallax richmondi Cory, Field Mus. Pub., No. 183, Om. Ser., I, 1915, 



p. 303 (new name for Doleromya pallida Richmond, preoccupied). 

 Doleromya pallida Richmond, Auk, 1895, p. 369 (Margarita Island). 



Range: Islands of Margarita and Tortuga (off Venezuela). 



Leucippus baeri" Simon. Baer's White-throat. 



Leucippus baeri Simon, Proc. Ill, Int. Om. Cong. Paris, 1901, p. 2 (Tumbez. 

 northwestern Peru); Id., Omis, 1901, p. 202. 



Range: Northwestern Peru. 



» Leucippus chionogaster longirostris ScHLtJTER : Differs from typical L. c. chiono- 

 gaster TsCHUDi, in having upper parts slightly more golden green and the wings, tail 

 and bill averaging longer. Wing, 60; bill, cf' 27; 9 25 mm. 



^Leucippus fallax richmondi Cory: Differs from L. fallax fallax (BouRC. & 

 MuLS.) in its paler plumage. 



" Leucippus baeri Simon: Somewhat resembles L. leucogaster Tschudi ( = chiono- 

 gaster TscHUDi), but has the under parts of body pale fawn gray (instead of white), 

 the lateral rectrices white with a wide subterminal bar sloping to the top by a white 

 apical line; bill entirely black. 



Note. — M. Simon remarks that its entirely black bill shows its relationship to 

 the genus Talaphorus. 



