SYNONYMY AND CHAEACTEKS OP S. SEEEIPENNIS 439 



Stelgldopteryx serripennls, Bd. Eev. AB. 1865, 314 (type of the genus).— Oomcs, Tr. Phila. 



Acad. 1866, 72 (Fort Whipple, Ariz.).— Oou«s, Pr. Boat. Soo. xii. 1868, 111 (South Caro. 



Una) Coma, Key, 1872, 114.— Jferr. Ann. Eep. U. S. Geol. Snrv. Terr, for 1872, 1873, 



^\^i.—Ridgw. Bull. Ess. Inst. v. 1873, 181 (Colorado).— JJidgrMj. Ann. Lyo. N. Y. x. 1874, 



370 (Illinois).— aferr. Am. Nat viiL 1874, 8, Sl.—Ooues, BNW. 1874, 90.— B. B. <t B. 



NAB. i. 1874, 350, pi. 10, f. 12.— Tarr. a Hensh. Eep. Orn. Specs. 1874, 11 Bensh. ibid. 



42, 60, 77, 105.— flcnsA. List B. Ariz. 1875, 151.— Bensh. Zool. ExpL W. 100 Morid. 



1875, 219.— BrewJ8t. Ann. Lye. N. Y. xl. 1875, 139 (Virginia, habits).- Gentrj/, Life-Hist. 



1876, 196.— Purdie, Bull. Nutt. Club, li. 1877, 21 (Connecticut).— Jferr. Trans. Conn. 



Acad. iv. 1877, 31. — Langdan, List B. Cincinnati, 1877, 7 (abundant ; nesting in holes 



in banks like 0. riparia).—Bidgw. Eep. Snrv. 40th Par. iv. 1877, 446. 

 Stelgldopterlx serripennls, Wheat. Ohio Agric. Eep. for 1874, 1875, 565. 



A closey related, if really different, species is Cotj/le fulvipennis, Scl. PZS. 

 1859, 364 (Xalapa) ; Bd. Eev. AB. 1865, 316 ; Salv. PZS. 1870, 184 (Veragna). 



Had. — United States, from Atlantic to Pacific, and probably adjoining 

 British Provinces. British Columbia {Lord). Eare or wanting in North- 

 eastern States (Connecticut, Merriam). South to Guatemala. 



Ch. sp. — S S Murinus, alis cauduque obscurioribus ; infra 

 dilutior, postice albicans. 



$ $ : Lustreless mouse-brown or brownish-gray, paler below, gradually 

 whitening posteriorly. Wings and tail darker than the upper parts. 

 Eather larger than the last species. No dark pectoral band contrasting 

 with white. No tuft of feathers at the base of the hind toe. Outer web of 

 outer primary stiffened and converted Into a series of little hooks. 



Young : At a very early age, the feathers of the back, rump, and wings are 

 suifused or edged with rich rusty-brown, vyhile the under parts are more or 

 less tinged with a paler shade of the same. The booklets of the wings are 

 only fully developed in adult birds, and are not appreciable at all in young 

 ones. 



OF the Rough-winged Swallow, type of a notable genus and 

 an interesting species in many respects, no adequate 

 biography, reflecting all the information we have gradually 

 acquired, has yet appeared ; though various original contribu- 

 tions to such history, as those furnished by Audubon, Brewer, 

 Van Fleet, and others, have supplied the requisite material. 

 Our Eough-vviug was not the first-discovered representative of 

 this curious group, superficially so similar to Gotyle, yet quite 

 distinct; for, many years before Audubon's discovery of serri- 

 pennis, Vieillot named a Hirundo ruficoUis, or ff. Jlavigastra, 

 an inhabitant of South America, subsequently determined to 

 be a Stelgidopteryx. In later times, several additional species 

 have been described ; the Cotijle falvipennis of Sclater, 1859, 

 the C. uropygialis of Lawrence, 1803, and the 8. fulvigula of 

 Baird, 1865, all of which inhabit Middle America, and some of 

 which are probably not very distinct species. 



