BIRDS OF NORTH AND MIDDLE AMBEICA. 569 



arts also lighter, the markings on anterior portion more grayish, the 

 ars on posterior portions narrower, sometimes interrupted. 



Adult maZe.— Length (before skimiing), 213-248 (232);" wing, 

 86-213 (198.3); tail, 101.5-112.5 (109.1); exposed cuhnen, 6-7.2 

 3.9); tarsus, 13.5-15.8 (14.6); middle toe, 13.9-16 (15.3).^ 



Adult female.~Wmg, 175-201 (189.5); taU, 102.5-115 (108); 

 sposed culmen, 6-7.5 (6.5); tarsus, 13.8-15.3 (14.7); middle toe, 

 4-16 (14.9.)» 



Northern portion of Great Plains district, breeding from Nebraska 

 Thomas County; Antelope County) and northwestern Iowa (Sioux 

 ity; Dickinson County) northward through South Dakota (Huron; 

 ear Rosebud; Missoxu-i Eiver 40 miles above Fort Pierre; Fort 

 isseton). North Dakota (Fort Union; Pembina; 50 miles west of 

 embina Mountains; Fort Rice; Linton; Big Muddy Creek; Towner 

 ounty; Devils Lake Indian Reservation; Pierce County; Rolette 

 ounty; Nelson County; Souris River; Fort Berthold; etc.), west- 

 m Minnesota (Lac qui Parle County; Grant County; Kimbrae), 

 ortheastern Wyoming (Uva), eastern Montana (Fort Keogh; Dar- 

 all's Ranch, Dawson County; Strater, Valley County), Assiniboia, 

 ad western Manitoba to southeastern Saskatchewan (Fort Carleton; 

 ort Pitt; Grand Rapids; QuiU Iiake; Prince Albert); casual in 

 sntral Iowa (Dickinson County, June; 4 miles southeast of Boone^ 

 'ct. 27); migrating southward through Kansas (Burlington, October; 

 ear Lawrence, September), and eastern Colorado (Barr, Aug. 8), 

 ut not traced beyond. 



Chordeiles popetue (not Caprimulgits popetue Vieillot) Baikd, Rep. Pacific R. R. 

 Surv., ix, 1858, 151, part (40 miles above Fort Pierre, South Dakota; Black 

 Hills?). 



Chordiles virginianus Coues, Bull. U. S. Geol. and Geog. Surv. Terr., iv, 1878, 

 613 (localities in North Dakota and eastern Montana; habits). — ^McChesney, 

 Bull. TJ. S. Geol. and Geog. Surv. Terr., v, 1879, 81 (Ft. Sisseton, South 

 Dakota). 



[Chordiles popetue] sennetti Coues, Auk, v, Jan., 1888, 37 (50 miles west of Pem- 

 bina, North Dakota; coll. U. S. Nat. Mus.). 



Chordeiles mrginiarms sennetti Chamberlain, Syst. Index Canad. Birds, 1888, 

 App. A., p. 14. — Chapman, Auk, v, 1889, 396. — ^American Ornithologists' 

 Union Committee, Suppl. to Check List, 1889, 18; Auk, xiv, 1897, 121 

 (Check List no. 420c); Check List, 3rd ed., 1910, 199.— Thompson, Proc. 

 IT. S. Nat. Mus., xiii, 1890, 554 (Manitoba; habits). — Bishop, Auk, xui, 

 1896, 135 (Towner and Rolette counties, North Dakota; crit.). — Lano, Auk, 

 XV, 1898, 54 (Madison, Lac qui Parle Co., w. Minnesota, 2 specs., Aug.). — 

 Bartsch, Auk, xvi, 1899, 86 (Boone Co., Iowa, 2 specs.; no date given). — 

 CoBBATJX, Ottawa Nat., 1900, 28 (s. Saskatchewan, summer resident). — 

 Anderson, Proc. Davenp. Ac. Sci., xi, 1907, 281 (Boone, Iowa, 1 spec). — 

 Bent, Auk, xxv, 1908, 27 (s. w. Saskatchewan). — Wetmore, Condor, xi, 

 1909, 159 (near Lawrence, Kansas, Sept.). 



" Four specimens. 1> Ten specimens. 



