718 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



grayish white on throat, chin, and maLar region; bill black; iris 

 brown; legs and feet brownish or dusky (more or less livid in life). 



Young. — Not essentially if at all different in coloration from adults. 



Adult maZe.— Length (skins), 116-132 (124); wing, 126-133 

 (129.2); tail, 39.5-44 (42.3); exposed culmen, 5-6 (5.7); tarsus, 

 11.5-12.5 (12): middle toe, 8-9 (8.3).« 



Adult female.— Length (skins), 112-134 (117); wing, 122. .5-133.5 

 (129.7); tail, 40-45.5 (42); exposed culmen, 5.5-6 (5.6); tarsus, 

 11-12.5 (11.7); middle toe, 8-8.5 (8.2).^ 



Eastern North America; north to New Brunswick (Fort Fairfield; 

 Grand Falls), Nova Scotia (Cape Breton Island), Province of Quebec 

 (Point de Monts), southern Labrador,'' northern Ontario (Lake Mus- 

 koka), Manitoba (Winnipeg), and Alberta (Edmonton) — accidentall}^ 

 to southern Greenland (Sukkertoppen) — west to western border of 

 Great Plains (Miles City, Montana, Black Hills, South Dakota) and 

 (accidentally?) New Mexico (Rinconada, March 1); breeding south- 

 ward to southern Florida (Tarpon Springs) and thence westward along 

 Gulf coast to southeastern Texas; during migration southw\ard to 

 Vera Cruz (Jalapa) and Yucatan (Cozumel Island) — also to Guate- 

 mala?;'^ occasional straggler to the Bermudas. 



[Hirundo] pelagica Linn^us, Syst. Nat., ed. 10, i, 1758, 192 (based on Einmdo, 

 Cauda aculeata, americana Catesby, Nat. Hist. Carolina, iii, 8, pi. 8). 



Chsetura pelagica Baird, Brewer, and Ridgway, Hist. N. Am. Biixls, ii, 1874, 

 432, pi. 45, fig. 7.— CouES, Birds Northwest, 1874, 267 (Bijou Hills, South 

 Dakota); Bull. U. S. Geog. and Geol. Surv. Terr., iv, 1878, 614 (Pembina and 

 Souris R., North Dakota).— Reid, Bull. U. S. Nat. Mus., no. 25, 1884, 209 

 (Bermuda, straggler).— Ridgway, Proc. U. S. Nat. Mus., iii, 1880, 188; Orn. 

 Illinois, i, 1889, 364.— Hoffman, Proc. Bost. Soc. N. H., 1882, 401 (Fort Ber- 

 thold. North Dakota, breeding).^ — Seton, Auk, iii, 1886, 156 (w. Manitoba, 

 summer res.). — American Ornithologists' Union, Check List, 1886, no. 

 423; 3d ed., 1910, 200.— Scott, Auk, vi, 1889, 252 (Tarpon Springs, Florida, 

 breeding). — Salvin, Ibis, 1889, 367 (Cozumel I., Yucatan; crit.). — Thomp- 

 son, Proc. U. S. Nat. Mus., xiii, 1890, 556 (Winnipeg, etc., Manitoba). — 

 Hartert, Cat. Birds Brit. Mus., xvi, 1892, 480 (Jalapa, Vera Cruz; Cozumel 

 I., etc.). — Salvin and Godman, Biol. Centr.-Am., Aves, ii, 1894, 374 (Jalapa; 

 Cozumel; Guatemala?). — Bendire, Life Hist. N. Am. Birds, ii, 1895, 177, pi. 

 1, fig. 25 (egg).— Beyer, Proc. Louisiana Soc. N. H. for 1897-99 (1900), 103 

 (Louisiana, breeding). — Bailey (Florence INL), Handb. Bu-ds W. U. S., 1902, 

 230. — Williams, Auk, xxi, 1904, 456 (Leon Co., Florida; summer res.). — 

 TowNSEND (C. W.), Auk, xxiii, 1906, 174 (Cape Breton I., Nova Scotia; 

 descr. nest, etc.). — Swales and Taverner, Wilson Bull., no. 55, 1906, 65 

 (Lake Muskoka, n. Ontario, common). — Hunt, Wilson Bull., no. 58, 1907, 

 18 (Lake Sebago, Maine). — Preble, North Am. Fauna, no. 27, 1908, 390 

 (Edmonton, Alberta, May 17). — Visher, Auk, xxvi, 1909, 148 (Black Hills, 

 w. South Dakota). 



« Ten specimens. 



b Eight specimens. 



c Perhaps doubtful. 



t^See Salvin and Godman, Biol. Centr.-Am., Aves, ii, 1894, 375. 



