50 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



ISerse] fulva Bonapabte, Oonsp. Av., i, 1850, 341, part. 



Petrochelidon fulva (not of Cabanis, 1850) Bonaparte, Compt. Bend., xxxviii, 

 1854, 650, part. 



IPetrochelidon'] pyrrhonota ( not Hirundo pyrrhonotaYieiUof}") ScLATBBand Salvin 

 Nom. Av. Neotr., 1873, 14, part. 



Petrochelidon pyrrhonota Salvin and Godman, Biol. Centr.-Am., Aves, i, 1883, 

 226, part (Mazatlan and Tepic, w. Mexico).— Sharpe, Oat. Birds Brit. Mus., 

 X, 1885, 193, 635, part (North American references and localities).— (?) Sal- 

 vin, Ibis, 1888, 256 (Oozumel I. ). — Sharpe and Wyatt, Mon. Hirund., 1894, 

 531, 590, part, pi. 104 (North American references and localities). 



The following references, usually cited for the present species, are 

 doubtful, either as pertaining to the species in its larger sense or to the 

 North American form: 



{^Hirundo} americana Gmelin, Syst. Nat.,i, pt. ii, 1788, 1017 (La Plata; based on 

 Hirondelle A croupion voux et queue carrie Buffon, Hist. Nat. Ois., vi, 698; 

 Rufous-rumped Swallow Latham, Gen; Synop. Birds, ii, pt. 2, 582). — ^BbiE, 

 Isis, 1828, 315; 1844, 175.— Gray, Hand-list, i, 1869, 71, no. 840. 



P[etrochelidon] americana Oabanis, Mus. Hein., i, 1850, 47, footnote. 



Petrochelidon americana Pelzeln, Orn. Bras., 1871, 17, 402. 



Hirundo pyrrhonota Vieillot, Nouv. Diet. d'Hist. Nat., xiv, 1817, 519 (Paraguay; 

 based on Oolondrina rabadilla acanelada Azara, Apunt., ii, 511). 



H[irundo'\ pyrrhonota Gray, Gen. Birds, i, 1845, 58. 



[Hirundo'] pyrrhonota Boie, Isis, 1844, 175. 



Cotyle pyrrhonota Bubmbister, Syst. Ueb. Th. Bras., iii, 1856, 145; La Plata Eeis., 

 ii, 1861, 477 (Tucuman, Argentina). 



[^Petrochelidon] pyrrhonota Sclatee and Salvin, Nom. Av. Neotr., 1873, 14, part. 



Petrochelidon pyrrhonota Dubnfobd, Ibis, 1877, 169 (Buenos Aires, Mar.); 1878, 

 58 (Moreno, etc., Argentina, Mar., Apr.). — White, Proc. Zool. Soc. Lond., 

 1882,595 (Flores, Argentina, Dec). — Salvin and Godman, Biol. Centr.-Am., 

 Aves, i, 1883, 226, part (Brazil; Paraguay). — Shaepe, Cat. Birds Brit. Mus., x, 

 1885, 193, 635, part (Ytarare and Pelotas, Eio Grande do Sul, s. Brazil; 

 Pacheco, Argentina). — Beblepsoh, Journ. fiir Orn., 1887, 114 (Paraguay). — 

 Sclatee and Hudson, Argentine Orn., i, 1888, 30. — Shaepe and Wyatt, 

 Mon. Hirund., 1894, 590, part (South American localities and references). — 

 Ihering, Aves do Est. S. Paulo, 1899, 140 (Sao Paulo, s. Brazil). 



PETROCHELIDON LUNIFRONS TACHINA Oberholser. 

 LESSER CLIIT SWALLOW. 



Similar to P. I. lunifrons, but decidedly smaller (size of P. I. melano- 

 gaster) and the frontal patch fawn color, dull cinnamon, or wood brown. 



Adult male.— L&ngth. (skins), 103-123 (116.7); wing,' 100-104 (102.1); 

 tail, M-47 (45.8); exposed culmen, 7-8 (7.6); width of bill at frontal 

 antise, 6-7 (6.7): tarsus, 11.5-12.5 (12.1); middle toe, 12-13 (12.1).» 



Adult female. — Length (skin), 121; wing, 105.5; tail, 48.5; exposed 

 culmen, 7.6; width of bill at frontal antise, 6; tarsus, 11; middle 

 toe, ll.<^ 



oSee page 48. If really belonging to this species, this name is quite as likely to 

 belong to the smaller southern form, breeding in southern Texas and eastern 

 Mexico (P. I. iachina). 



6 Seven specimens, from Presidio, Brewster, and Valverde counties, Texas., 



"One specimen, from Presidio County, Texas. 



