AVES HIRUNDINID^. 813 



Family Hirundinid^. 



Sharpe, Cat. Bds. Brit. Mus. x. p. 85 (1885) ; Sharpe, Hand-List Eds. iii. 

 p. 187 (1901). 



Sub-Family Hirundinin^. 



Sharpe, Cat. Bds. Brit. Mus. x. p. 85 (1885) ; Sharpe, Hand-List Bds. iii. 

 p. 187 (1901). 



Genus IRIDOPROCNE Coues. 



Type. 

 Iridoprocne CoM&s, B. Color. Vail. p. 412 (1878). . Hirundo bico/orW\t\\\o\.. 

 Geographical Range. — North, Middle and South America ; adjacent 

 islands. 



Iridoprocne leucorrhoa (Vieillot). 



Hirundo kucorrhoaWitxWoi, n. Diet. d'Hist. Nat. xiv. p. 519 (1817), based 



on "Golondrina rabadilla blanca" of Azara (Paraguay). 

 Hirmido frontalis Go\x\d, Voy. Beagle, Birds, p. 40(1841) (Montevideo, 



north bank of the Plata). 

 Hint ndo gouldi Cdissm, Proc. Acad. Nat. Sci. Phila. 1850, p. 69 (La Plata). 



Description. — Adult male, P. U. O. C. 8974, La Plata. Total length, 

 5.50 inches; wing, 4.62; culmen, .30; tail, 2.12; tarsus, .50. Above 

 glossy steel green, with a white supraloral streak, broader in front, and a 

 broad white rump patch ; wings and tail brownish black with slight steel 

 green reflections, some secondaries with remains of white tips ; whole 

 under surface white with a steel green patch on each side of the breast ; 

 bill and feet black. 



Female similar. 



Geographical Range. — Brazil and central Peru through Uruguay, Para- 

 guay, Argentina and Patagonia as far as Chupat Valley. 



Hudson says of this species in La Plata: "The Hirimdo leucorrhoa is 

 the most common of our Swallows, and in its glossy coat of deep blue and 

 green, with rump and under plumage snowy white, is an elegant and beau- 

 tiful bird. They are the last of all the migratory species to leave us in 

 autumn, and invariably reappear in small numbers on every warm day in 

 winter, so that some people do not believe that they leave us at all, but only 

 retire to the more sheltered places when the weather is severe. In the win- 



