BIRDS OF NORTH AND MIDDLE AMERICA. 



669 



Adult female.~Length{akms),110-121{lU.l); wing, 52-54.5(53.4); 

 tail, 49-53 (50.8); exposed culmen, 10.5-11 (10.9); tarsus, 19.5-21.5 

 (20.3); middle toe, 12.5-14 (18.8).' 



Whole of arid region of western United States; east to more west- 

 ern portions of the Great Plains (Fort Randall, South Dakota, to San 

 Antonio, Texas); north to Montana (Fort Custer, Fort Keogh, etc.), 

 Idaho, and eastern Washington (?); west to southern California (Los 

 Angeles County, etc.),^ and northern Lower California; breeding 

 southward to northern Chihuahua (San Diego) and northern Lower 

 California (Gardner's Laguna, Salton River) ; southward in winter to 

 Cape St. Lucas and Territory of Tepic, western Mexico. 



Sylvia trichas (not Turdus trichas Linnaeus) Nuttall, Man. Orn. U. S. and Can., 

 1, 1832, 401, part— Audubon, Orn. Biog., v, 1839, 463, .part. 



Geothlypis trichas Baird, Rep. Pacific R. R. Surv., ix, 1858, 241, part; Cat. N. 

 Am.'Birds, 1859, no. 170, part; Review Am. Birds, 1865, 220, part.— Xanti>, 

 Proc. Ac. Nat. Sci. Phila., 1859, 191 (Fort Tejon, California).— Heney, Pnx . 

 Ac. Nat. Sci. Phila., 1859, 106 (New Mexico).— Dresser, Ibis, 1865, 476 

 (San Antonio, Texas). — CouBS, Ibis, 1865, 163, in text (Arizona); Proc. Ac. 

 Nat. Sci. Phila., 1866, 69 (Fort Whipple, Arizona); Check List, 1873, no. ! , 

 part; 2d ed., 1882, no. 141, part; Birds N. W., 1874, 74, part; Birds Coi. 

 Val., 1878, 309, part.— Cooper, Orn. Cal., 1870, 95, part.— Salvin, Ibis, 1872, 

 149, part (monogr.). — Aiken, Proc. Bost. Soc. N. H., xv, 1872, 197 (Coh - 

 rado).— Meeeiam, Ann. Kep. U. S. Geol. Surv. for 1872 (1873), 674 (Ogden, 

 Utah; Fort Ellis, Montana), 713 (Utah).— Allen, Proc. Bost. Soc. N. H., 

 xvii, 1874, 52 (Missouri and Musselshell rivers, w. North Dakota). — Baihd, 

 Brewer, and Ridgway, Hist. N. Am. Birds, i, 1874, 297, part. — LAWEEXcr, 

 Mem. Bost. Soc. N. H., ii, 1874, 269, part (Mazatlan, winter).— Henshaw, 

 Zool. Exp. W. 100th Merid., 1875, 204 (localities in Utah, Colorado, and 

 Arizona). — Ridgway, Orn. 40th Parallel, 1877, 434 (localities in Nevada and 

 Utah); Nom. N. Am. Birds, 1881, no. 122, part.— Salvin and Godman, 

 Biol. Centr.-Am., Aves, i, 1881, 150, part. — Brewstee, Bull. Nutt. Orn. 



' Eight specimens. 



Adult males from different geographic areas average, respectively, as follows: 



''On account of lack of sufficient material I am not able to make out satisfactorily 

 the range of this form in California, Specimens have been examined from Alhambra 

 (April 2, September 8), Los Angeles (April 7), and Pasadena (November 23). I 

 would also refer to this form a specimen from Stockton (April 13) and a breeding 

 bird from Carberry's Ranch. It is possible that its range may be general throughout 

 the valleys of California, except those of the coast district from Los Angeles County 

 northward. 



