222 BULLETIN- 50, UNITED STATES NATIONAL MUSEUM. 



Prairie marsiies of Mississippi Valley and central British Provinces, 

 breeding from northern Illinois, Minnesota, South Dakota, etc., north 

 to Manitoba (Winnipeg, Car berry, Raeburn, etc.); south in winter to 

 Gulf coast, from Texas (inclusive) eastward and to coast of South 

 Carolina; occasional along more northern Atlantic coast from Massa- 

 chusetts southward during fall migration; accidental in California 

 (Santa Clara Countj', Maj' 6, 1891, one specimen). 



Specimens connecting this form with A. c. suivirgatus appear to be 

 more common than those connecting it with A. c. cmcdacutits. 



Ammodromus caudacutus var. nelsoni Allen, Proc. Bost. Soc. N. H., xvii, Mar., 



1875, 293 (Calumet marshes, Cook Co., n. e. Illinois). — Nelson, Bull. Nutt. 



Orn. Club, i, 1876, 40 (Calumet marshes and lake, June 12 to Sept. 17; Grass 



Lake, Lake Co., Illinois, Nov. 10; Illinois R. ; Racine, Wisconsin). 

 Ammodromus yar. nelsoni Nelson, Bull. Essex Inst., viii, 1876, 152. 

 A.\_mmodromus'] caudacutus var. nelsoni Nelson, Bull. Essex Inst., viii, 1876, 107 



(Calumet marshes, etc., breeding; Racine, Wisconsin). 

 Ammodromus caudacutus nelsoni Gibbs, Bull. U. S. Geol. and Geog. Surv. Terr., 



V, 1879, 486 (Michigan, lat. 42° 20', Oct.).— Worthen, Bull. Nutt. Orn. 



Club, V, Jan. ,1880, 32 (Warsaw, Illinois, May 8).— Ridgway, Nom. N. Am. 



Birds, 1881, no. 201a. 

 A-lmmodromu^'] caudacutus nelsoni Ridgway, Bull. 111. State Labr. N. H., no. 4, 



1881, 179 (Illinois). 



Ammodramus caudacutus nelso^ii Alli:^, Bull. Nutt. Orn. Club, v, Apr., 1880, 89; 

 vii, 1882, 55 (Neosho Falls, Kansas, Oct. 17).— Coues, Check List, 2d ed., 



1882, no. 241.— Beewster, Auk, ii, 1885, 216 (Charleston, South Carolma, 

 Oct. 8).— Fisher, Auk, ii, 1885, 306, part (marshes of Croton R., s. e. New 

 York, Sept. 25 to Oct. 10) .—American Ornithologists' Union, Check List, 

 1886, no. 549«.— Cooke, Bird Migr. Miss. Val., 1888, 192 (St. Louis, Missouri, 

 etc.).— Merriam, in Cooke's Bird Migr. Miss. Val., 1888, 192, footnote 

 (Fort Sisseton and Devils Lake, Dakota, breeding).— Cant well, Auk, vi, 

 1889, 340 (Madison, Minnesota, May).— Mearns, Auk, vii, 1890, 56 (Hudson 

 Highlands, s. e. New York) .—Poling, Auk, vii, 1890, 241 (Adams Co., w. 

 Illinois, Apr. 26) .—Chapman, Auk, iii, 1891, 323 (Nueces Bay, Texas, Apr.) .— 

 Sage, Auk, viii, 1891, 115 (Portland, Connecticut, Oct. 4-13).— Goss, Birds 

 Kansas, 1891, 449 (summer resid.).— Thompson, Auk, x, 1893, 50 (Winnipeg, 

 Manitoba, May 25; Carberry, Manitoba, June 30 and Sept. 1).— Stone, Auk, 

 X, 1893, 85 (Atlantic City, New Jersey, May 9 and Oct. 2).— Palmer (W.), 

 Auk, xi, 1894, 333 (Washington, District of Columbia, Sept.; Four Mile Run, 

 near Alexandria, Virginia, Sept. 18; Cobbs I., Virginia, May 11).- Butler, 

 Proc. Indiana Ac. Sci., 1895, 167 (Morgan Park, Cook Co., Illinois, breeding); 

 Birds Indiana, 1897, 947 (Lake Co., summer, to Nov. 10).— Dwight, Auk, 

 xiii, 1896,' 273, 275, pi. 4, left-hand fig. (crit.).— Knight, Bull. 3, Univ 

 Maine, 1897, 97 (Scarboro, Maine, 2 specs. Oct. 16, 1894) . 



A. [mmodramus'] c. \_audacvius'\ nelsoni CouES, Key N. Am. Birds, 2d ed., 1884, 368. 



A.[mmodramus'] caudacutus nelsoni Ridgway, Man. N. Am. Birds 1887 413 

 part.— Stone, Auk, x, 1893, 85 (Atlantic City, New Jersey, May 9, 1 spec). 



Ammodramu^ nelsoni 'SovL'io^, Proc. Portland Soc. N. H., ii, March 15, 1897 102 

 (crit. ). — American Ornithologists' Union Comjiittee, Auk, xvi, 1899, 118. — 

 Bartsch, Auk, xvi, 1899, 276 (Iowa City, Iowa, Oct. 12) .—Nash, Auk, xvi, 

 1899, 277 (Toronto, Ontario, June toOct.).— Lantz, Trans. Kans. Acad. Sci. 

 for 1896-97 (1899), 265 (e. Kansas, rare summer resid.; McPherson Co., 

 Oct.). 



