PASSEJIES— HIEUNDINIDAE— STELGIDOPTERYX SEBRIPENNIS. 219 



STELG1DOPTERYX SEERIPENNIS (Aiul.). 

 Ronsrh-wingrd Swallow. 



Hirundo serrvpennis, Atjd., Orn. Biog., iv, 1838, 503. 



Cotyle serrvpennis, Bd., U. S. & Mex. Bound. Surv., ii, pt. ii, 1850, Birds, 11. — Xewb., 

 P. E. R, Rep., vi, 1857, 79.— Bu., Birds N. A., 1858, 313.— Heerm., P. 

 R. R. Rep., x, pt. iv, 1859, 36.— Kennerly, P. R. R. Rep., Whipple's Route, 

 x, 1859, 24.— Coop. & Suckl,, P. R. R, Rep., xii, pt. ii, 18G0, 186.— Cooper, 

 Proc. Cal. Acad., 1870, 75.— Id., Birds Cal., 1S70, 110.— Allen, Bull. Mus. 

 Coin]). Zool., 1872, 176 (Eastern Kansas). — Snow, Birds Kan., 1S72, 8. 



Stelgidopteryso serripennis, Bd., Rev. Am. Birds, i, 1865, 314. — Coues, Proc. Acad. Nat. 

 Sci. Phila., 1866, 73 (Fort Whipple, Ariz.).— Id,, Key X. A. Birds, 1872, 

 114.— Bd., Brew., & Ridg., N. A. Birds, i, 1874, 350, pi. xvi, f. 12.— Yarrow 

 & Henshaw, Rep. Orn. Specs., 1872, Wheeler's Exped., 1S74, 11.— Hejnshaw, 

 An. Lye. Nat, Hist, N. Y r ., xi, 1874, 4.— Id., An. List Birds Utah, 1872, 

 Wheeler"s Exped., 1874, 42.— Id., Rep. Orn. Specs., 1873, Wheeler's Exped., 

 1874, 60, 77, 105.— Coues, U. S. Geol. Surv. Terr., 1874, 90. 



Exceedingly abundant on the Provo River, Utah, where they roost in 

 large numbers upon the dead bushes along the banks. So numerous are 

 they and so closely do they sit huddled together that six individuals were 

 secured at a single shot. They were observed on the wing' in pursuit of 

 insects, far into the evening, even when so dark that they could with 

 difficulty be distinguished. Also noticed in Western Utah and Eastern 

 Nevada. 



First seen about Denver the 6th of May, and common about the 12th. 

 In Southern Colorado, the species was represented by numerous individuals, 

 which usually confined their flight to the near vicinity of streams. I noticed 

 them several times in suspicious proximity to some dead stubs ; and, though 

 I never saw one entering the cavities, many of which had been appropriated 

 by the Violet-green Swallows, I think it quite probable that they had 

 recourse to this means of nidification in the absence of banks suitable for 

 their excavations. Many seen near Zufii, N. Mex. ; and its range probably 

 includes both this Territory and Arizona. At Fort Whipple, Ariz., it was 

 found breeding by Dr. Coues, who observed its arrival late in April. 



