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291 



REVIEW OF AMEttlCAX llIUDS. 



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Tarsi slightly featherbd on inner face at npper end ; equal in 

 length to middle too without claw. 



' Tail very ddrply forked Hirundo. 



Tail tlightly forked or einaiginate .... Tachi/cintta. 

 Tirsi ontirely naked; lengthened, equal to middle toe and 

 half itd uli.w. 

 Tail coudiderably forked CalUthtlidon, 



' '' ' Hirundo, Linn. 



Nostrils lateral. Tarsi short, not exceeding middle toe without its claw ; 

 the upper joint covered with feathers, which extend a short distance along 

 the innfci- face of tarsus. Tail very deeply forked ; the lateral feather mnch 

 attenuated, twice as long as tli*) middle. Basal joint of middle toe fr«e for 

 terminal fourth on outside, for half on inside. 



In type, and in American species, forehead and throat rufous ; a black 

 pectoral collar ; tail feathers with large light spots on inner webs. 



But two species, perhaps only one of this subgenus, as restricted, 

 belong to America. There are, however, quite a number found in 

 the old world. 



Hirundo taorreorum. v.! 



Hirundo horreorum, Barton, Fragments N. H. Penna. 1799, 17. — Baird, 



V/ri Birds N. Am. 1858, 308.— A. & E. Newton, Ibis, 1859, 66 (Sta. 



. ■ ^ , Cruz ; transient). — Sclatkb & Salvin, Ibis, 1859, 13 (Guatemala). 



, .. — ScLATER, p. Z. S. 1864, 173 (City of Mex.).— Lawrence, Aim. 



' ; ^ N. Y. Lye. 1861, 316 (Panama).— Cooper & Suckley, P. R. R, Rep. 



''"' XIJ, II, 184 (south of Columbia River). 



Elruni^o rufa, Vieill. — Cassin, 111. — Brewer. N. Am. Ool. I, 1857,91, 

 pi. V, fig. 63-67 (eggs).— Cab. Jour. IV, 1856, 3 (Cuba; spring 

 and autumn). — Reinhardt, Ibis, 1861, 5 (Greenland; two speci- 

 mens). — Gu^l^I.ACH, Cab. Jour. 1861, 328 (Cuba; common). 

 Hirundo americana, Wilson, Am. Orn. pi. 38, fig. 1, 2. — Rich. — Lembkye, 



Aves de Cuba, 1850, 44, lam. vii, fig. 2. 

 Hirundo rustica, AoD. Orn. Biog. II, pi. 173. — In. Birds Am. I, pi. 48.— 

 Jones, Nat. Hist. Bermuda, 34 (Bermudas ; Aug. and Sept.). 



Hab. Whole of United States ; north to Fort Rae, Slave Lake ; Greenland ; 

 Bouth in winter to Central America and West Indies. Not found at Cape St. 

 Lucas. 



The steel blue of the upper parts of this species has a docided 

 violet tinge, sonnetimes purplish. The black or steel blue pectoral 

 collar is very rarely continuous below in adults ; when it is, it is 

 usually formed in the centre by only one or two series of featlierS, 

 which are black to the down. The rufous of throat is a little darker 



