48 



BULLETIlSr 50, UNITED STATES NATIONAL MUSEUM. 



Adult m«/6^— Length (skins), 121-136(127.5); wing, 105-115 (108.6); 

 tail, 47-52 (49.4); exposed culmen, 6.5-8 (7.2); width of bill at frontal 

 antiis, 7-8 (7.1); tarsus, 11-14 (12.6); middle toe, 11-14 (12.2). « 



Adult /v/^«Z6.— Length (skins), 120-134 (126.9); wing, 102-110 

 (106.7); tail, 45-61 (48.7); exposed culmen, 7-8 (7.4); width of bill at 

 frontal an tire, 6.5-8 (6.7); tarsus, 11.5-13 (12.6); middle toe, 11-13 



(n.9).^ 



Nearly the whole of North America; breeding north to Nova Scotia 

 (Cape Breton), New Brunswick (upper St. Johns River), Anticosti 

 Island, Province of Quebec (God))out), etc., in the interior to Terri- 

 tory of Mackenzie (Fort Anderson. Fort Simpson, Point Lake, 

 Mackenzie, Anderson, and Lockhart rivers), and the Yukon Valley of 

 Alaska (Fort Yukon, Nulato, St. Michael, etc.), and on the Pacific coast 

 to British Columbia; breeding southward over nearly the whole of the 

 United States (except Rio Grande Valley, at least above mouth of the 

 Pecos River), ^ and coast district of northwestern Mexico, as far as 

 Mazatlan and Tepic. In winter, southward through Mexico and Cen- 

 tral America, at least to Honduras (Truxillo). Said to occur in winter 

 in Brazil, Paraguay, Argentina, and other parts of South America.'^ 



Hirundo, 35, Forster, Philos. Trans., Ixxii, 1772, 408 (Severn R.). 



Hirundo lumfrom Say, in Long's Exped. Rocky Mts., ii, 1823,47 (Rocky Mts.). — 

 SwAiNSON and Richardson, Fanna Bor.-Ani., ii, 1831,331 (Point Lake, lat. 

 65°, Slave and IMackenzie rivers, etc.). — Brewer, Proc. Bost. Soc. N, H., 

 1852, 270(lial)it8) ; N. Am. Ool., 1857, 94, pi. 5, figs. 68-73.— Woodhouse, Rep. 

 Sitgreaves' Exp. Zuniand Colorado R., 1853, 64. — Cassin, Illustr. Birds Cal., 

 Tex., etc., 1855, 243.— Baird, Rep. Pacific R. R. Surv., ix, 1858,309; Cat. N. 

 Am. Birds, 1859, no. 226. — Cooper and Suckley, Rep. Pacific R. R. Surv., 

 xii, pt. ii, 1860, 184 (Oregon and Washington). — Boardman, Proc. Bost. 

 Soc. N. H., ix, 1862, 125 (Maine).— Verrill, Proc. Bost. Soc. N. H., ix, 

 1862, 137 (Anticosti); ix, 1863, 276 (migrations, etc.); Proc. Essex Inst.,iii, 



« Seventeen specimens. 

 '' Fourteen specimens. 



cl have not seen breeding specimens from southern Texas east of the Pecos River; 

 possibly they may be referable to P. /. tachina. 



'^Not having seen any South American examples, I can not be sure that they belong 

 to the present form. 



