68 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Adult male.— Length (skins), 161-186 (174); wing, 96-103.5 

 (100.5); tail, 70-79 (74.1); exposed ciilmen, 13-15 (14.1); tarsus, 

 29-31 (29.6); middle toe, 16-17.5 (17.1). « 



AdvU female.— Length (skins), 154-166 (162); wing, 89-100 (97.5); 

 tail, 69.5-74.5 (71.6); exposed culmen, 13.5-14.5 (13.8); tarsus, 

 28-30.5 (29.2); middle toe, 16.5-18.5 (17).'' 



Interior districts of United States and British Provinces; breeding 

 from North Dakota (Pembina) and Manitoba (lower Saskatchewan; 

 Red River; between Winnipeg and Selkirk, etc.) to interior of British 

 Columbia (Ducks; Ashcroft; Okanogan), and southward to Nevada 

 (Mountain City), Utah (valleys of Bear, Weber, and Provo rivers and 

 Salt Lake Valley), and Colorado (Denver; Fort Garland); during 

 migration southward through Arizona (Tucson, May) and ]\Iexico 

 (Orizaba, A^era Cruz, winter) ? to southern Brazil (Chapada, Matto 

 Grosso, March 27), and eastward to Minnesota (Fort Snelling, May 

 16 to 26), Wisconsin (Camp Douglas, August 7), Illinois (Chicago, Sep- 

 tember 16; Glen Ellyn, May 6, 21, August 29, September 1, 6, 8), 

 Indiana (Vincennes, May 14; Wheatland, May 7; Liverpool, May 5), 

 Mississippi (Amite County, September 18), stragglmg to Ontario 

 (Hamilton, May 16) and South Carolina (Chester, October 5). 



Turdusfuscescens (not of Stephens) Baird, Rep. Pacific R. R. Surv., ix, 1858, 922, 

 927 (Fort Bridger, Wyoming); Cat. N. Am. Birds, 1859, no. 151, part; Review 

 Am. Birds, 1864, 17, part (Fort Bridger).— (?) Hayden, Trans. Am. Philns. 

 Soc, 1862, 158 (Lower Missouri). — Blakiston, Ibis, 1863, 58 (lower Saskatche- 

 wan; Red R., Manitoba).— (?) Sumichrast, Mem. Bost. Soc. N. H., i, 1869, 

 543 (near Orizaba, Vera Cruz, winter). — Stevenson, Prelim. Rep. U. S. Geo!. 

 Surv. Terr, for 1870 (1871), 463 (Green River, Wyoming).— Allen, Bull. 

 Mus. Comp. Zoo!., iii, 1872, 155, 173 (mountains of Colorado). — Coues, Check 

 List, 1873, no. 6, part; Birds Northwest, 1874, 5, part. — Ridgway, Bull. 

 Essex Inst., v, 1873, 172 (Salt Lake Valley, Utah), 179 (Colorado); vii, 1875, 

 35 (Provo R., Utah); Field and Forest, iii, 1877, 195 (Colorado); Orn. 40th 

 Parallel, 1877, 398 (valleys of Bear, Provo, and Weber rivers, Utah, breed- 

 ing).— Trippe, in Coues Birds Northwest, 1874, 228 (Colorado, 8,400 ft. July ).— 

 Henshaw, Ann. Lye. N. Y., xi, 1874, 2 (Utah); Rep. Orn. Spec. Wheeler's 

 Surv., 1874, 39 (Provo R., Utah), 56 (Denver, Colorado), 71 (Fort Garland, 



a Nine specimens. 

 b Six specimens. 



Ten adult males from the Mississippi Valley and Manitoba compare in average 

 measurements as follows: 



I am unable to appreciate any difference in coloration between the two series. 



