118 HIRTTNDINIDiE. 



Cooper, B. Calif, p. 106 (1870) ; Harting, Handh. Brit. B. p. 125 

 (1872); Scl. ^'Salv. Nomencl. Av. Neotr. p. 14 (1873) ; Mmjnard, 

 B. Florida, p. 72 (1873) ; Baird, Brewer, i.^ Ridqio. Hist. N. Amer. 

 B. p. 344, pi. 16. fig. 8 (1874) ; B. O. U.List Brit. B. p. 43 (1883) 

 Hiruudo viridis, Wils. Amer. Orn. v. p. 44, pi. .38. %. 3 (1812). 

 Hirundo leucogaster, Steph. Gen. Zool. x. p. 106 (1817). 

 Ohelidon viridis, Boie, Isis, 1826, p. 971, 1828, p. 316. 

 Hirundo prasina, Licht. Preis-Verz. mex. Vog. 1830, p. 2; Cab. 



J.f. O. 1863, p. 58. 

 Chelidon bicolor, Less. Compl. Buff. viii. p. 494 (1837) ; Bp. Comp. 



List B. Eur. ^ N. Amer. p. 8 (1838). 

 Chelidon leucogastra, Boie, Isis, 1844, p. 171, 

 Herse bicolor, Bp. Consp. i. p. 341 (1850). 



Tachycineta bicolor. Cab. Mus. Hein. Tb. i. p. 48 (1850) ; Gundl. J. 

 f. O. 1861, p. 339 ; Allen, Bull. Mus. C. Zool. ii. p. 269 (1871) ; 

 'Coties, Keii N. Amer. B. p. 113 (1872); id. B. N.-West, p. 86 

 (1874) ; id. B. Colorado Vail. p. 413 (1878) ; Cory, B. Bahama Isl. 

 p. 80 (1880) ; Salv. 8f Godin. Biol. Centr.-Anier., Aves, i. p. 235 

 (1883). 

 Petrocbelidon bicolor, Cass. Cat. Hirund. Mus. Philad. Acad. p. 4 

 (1853) ; SeJ. P. Z. S. 1857, p. 201, 1859, p. 364 ; id. ^ Salv. Ibis, 

 1859, p. 13 ; Scl. Cat. Amer. B. p. 40 (1862). 

 Iridoprocne bicolor, Coues, Check-list, p. 42 (1882) ; id. Key N. Amer. 



B. p. 322 (1884). 

 Hirundo bicolor. Tar. vespertina, Cooper, Amer. Nat. x. p. 91 (187r) j 

 id. Proc. U. S. Nat. Mus. ii. p. 246 (1880) ; Bidyio. Pr. U.S. Nut. 

 Mm. iii. p. 234 (1880). 

 Adult male. General colour above glossy steel-blue, greener on 

 the head, the scapulars like the back ; lesser and median wing- 

 coverts steel-blue ; greater coverts, bastard-wing, primary-coverts, 

 and quills blackish, the former edged and the latter glossed ex- 

 ternally with steel-blue, duller on the primary-coverts and quills ; 

 tail-feathers blackish with a steel-blue gloss ; lores and feathers 

 below the eye velvety black ; upper edge of the ear-coverts and 

 sides of the neck steel-green like the head ; cheeks, remainder of 

 ear-coverts, and entire under surface of body white, with a patch 

 of brown glossed with steel-green on the sides of the upper breast ; 

 axillaries and under wing-coverts smoky brown, those near the 

 edge of the wing dull whitish ; quills below dusky brown : " feet 

 flesh-coloured " (Audubon). Total length 5'3 inches, culmen 0-35, 

 wing 4-55, tail 2-25, tarsus 0"45. 

 Adult femcde. Similar to the male. 



Adult in ivinter plumage. Exactly like the summer plumage, but 

 much greener above. In breeding-dress the green appears to get 

 worn off and exchanged for steel-blue, and the green gloss dis- 

 appears almost entirely from the sides of the upper breast, which 

 becomes brown. 



Young. Very different from the adults and without metallic 

 gloss. General colour above sooty or mouse-brown ; the wing- 

 coverts and quills like the back ; lores blackish ; ear-coverts like 

 the head ; cheeks, throat, and imder surface of body white ; fore 

 neck and chest pale mouse-brown, darker on the sides of the chest 

 and flanks ; gape yellow. 



I 



