1918. Catalogue of Birds of the Americas — Cory. 313 



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



Popelairea langsdorffi, langsdorffi Hellmayr, Verb, der Ornith. Gesell. Bayem, 



XII, 1915, p. 154 (Bahia; Sao Paulo; Rio de Janeiro; Espirito Santo). 

 Range: Eastern and southern Brazil. 

 3: "Brazil." 



*Popelairia langsdorffi melanosteron'" {Gould). Black-breasted 



Thorn-bill. 

 Gouldia melanosternon Gould, Ann. & Mag. Nat. Hist., (4), I, 1868, p. 328 



(Peru). 

 Gouldia melano sternum Boucard, Gen. Humming Bds., 1893-95, p. 41 (Peru 



and Ecuador). 

 Popelairea langsdorffi melanosternon Hellmayr, Nov. Zool., XVII, 1910, p. 377 



(Rio Madeira). 

 Popelairia langsdorffi Oberholser, Proc. U. S. Nat. Mus., XXIV, 1902, p. 342 



(Coca, Rio Napo, Ecuador). 

 Range: Peru, eastern Ecuador, Upper Amazonian Region. 



3: "Ecuador" 2; Peru (Yurimaguas) i. 



*Popelairia conversii conversii Bonder and Mulsant. Con vers 's 



Thorn-bill. 

 Trochilus conversii Bourcier and Mulsant, Ann. Sci. Phys. et Nat. Lyon, IX, 



1846, p. 313 (Bogota). 

 Gouldia conversi Gould, Mon. Trochil., Ill, 1854, pi. 129; Elliot, Syn. Trochil., 



1879, p. 139, part; Boucard, Gen Humming Bds., 1893-95, p. 42. 

 Prymnacantha conversi Salvin, Cat. Bds. Brit. Mus., XVI, 1892, p. 430, part. 

 P[opelairea] conversi (typica) Hartert, Das Tierreich, 1900, p. 223. 

 Popelairia conversii conversii Ridgway, Bull. U. S. Nat. Mus., No. 50, V, 191 1, 



p. 678, in key. 

 Popelairia conversi Chapman, Bull. Am. Mus. N. H., XXXVI, 1917, p. 312 



(Noanama; Barbacoas, Colombia). 

 Range: Colombia, Costa Rica and Panama. 

 3: "Colombia." 



*Popelairia conversii aequatorialis*' {Berlepsch and Taczanowski) . 

 Equatorial Thorn-tail. 

 Gouldia conversi aequatorialis Berlepsch and Taczanowski, Proc. Zool. Soc. 

 Lond., 1883, p. 567 (Chimbo, west Ecuador). 



« Popelairia langsdorffi melanosteron (Gould) : Similar to P. I. langsdorffi, but 

 differs in having the crown grass green and the under parts darker and more golden 

 on lower breast. 



^Popelairia conversii aequatorialis Berlepsch and Taczanowski: Authorities 

 differ as to the standing of this subspecies. It is recognized by Hartert (I.e.) and 

 Ridgway (I.e.), and Brabourne and Chubb, but questioned by Salvin, Boucard (I.e.) 

 and Berlepsch. It is supposed to differ in its more bluish pectoral spot; longer bill 

 and upper tail coverts more bronzy and less green. Chapman considers birds from 

 western Colombia to be typical P. conversii conversii. I therefore restrict the range 

 of P. c. aequatorialis to Ecuador, although this conflicts with Ridgway's statement 

 that he is unable to distinguish Costa Rican and Panaman specimens from those 

 from Ecuador (I.e., footnote, p. 680). 



