BIRDS OF NOETH AND MIDDLE AMERICA. 155 



Sialia mexicana (not of Swainson) Sumichrast, Mem. Bost. Soc. N. H., i, 1869, 

 544 (alpine region of Mount Popocatapetl, Mexico). ^ — Salvin and Godman, 

 Biol. Centr.-Am.,Aves.i,1879, 47, parte Jalapa"?;Popocatapetl). — Seebohm, 

 Cat. Birds Brit. Mus., v. 1881, 331, part (in synonymy). — Ridgway, Auk, 

 xi, 1894, 145, part (Mount Orizaba, Puebla; Mount Popocatapetl; monogr.); 

 Man. N. Am. Birds, 2d ed., 1896, 612, part.— Cox, Auk, xii, 1895, 359 (Mount 

 Orizaba, 14,000 ft.).— Chapman, Bull. Am. Mus. N. H., x, 1898, 38 (Las 

 Vigas, Vera Cruz, 8,000 ft., breeding). 



[Sialia] mexicana Sclater and Salvin, Nom. Av. Neotr., 1873, 4, part. — Sharpe, 

 Hand-list, iv, 1903, 183, part. 



Sialia mfxicana ai(stralis Nel.son, Proc. Biol. Soc. Wash., xvi. Nov. 30, 1903, 159 

 (Mount Tancilaro, Micb(iac;in; cnll. U. S. Nat. Mus..). 



SIALIA MEXICANA OCCIDENTALIS (Townsend). 

 CALIFORNIA BLUEBIRD. 



Similar to S. m. anabelst but smaller, with relatively smaller and 

 more slender bill; adult male with the blue averaging- less violaceous 

 (more ultrramarine or col^alt, sometimes nearly cerulean), back 

 (usually) with more of chestnut, and cinnamon-rufous of under parts 

 more extended, always (?) covering whole anterior portion of chest. 



Adult male.— LQ\\gi\\ (skins), 151-165 (158); wing, 102-109.5 

 (105.3); tail, 61.5-68.5 (64.4); exposed culmen, 11.5-13 (12.2); tar- 

 sus, 19.5-21.5 (20.1); middle toe, 14-16 (15.1).« 



Adult few ale. —Length, (skins),' 148-163 '(155); wing, 100-107.5 

 (102.9); tail, 60.5-64 (62.1); exposed culmen, 12-13 (12.6); tarsus, 

 20-21.5 (20.6); middle toe, 14.5-15.5 (15.1). « 



Pacific coast district, from Los Angeles County, California, to 

 British Columbia, chiefly from the coast to the western slopeof the Sierra 

 Nevada and Cascade ranges, but extending eastward through eastern 

 Oregon and Washington to Idaho (Fort Sherman; Hellgate) and 

 Montana (Thompsons Falls and Columbia Falls, breeding); north- 

 ward to British Columbia (Vancouver Island; Ducks); southward in 

 winter as far as vSan Pedro Marth- Mountains, Lower California. 



Sialin orridentalis Townsend, Journ. Ac. Nat. Sci. Phrla., vii, 1837, 188 (Colum- 

 l)iaR.; type in coll. U. S. -Nat. Mus.); Narrative, 1839, 343.— Audubon. 

 Synopsis, 1839, 84; Birds Am., oct. ed., ii, 1841, 176, pi. 135.— Nuttall. 

 Man. Orn. U. S. and Can., 2d ed., i, 1840, 513.— Woodhouse, in Silgreaves' 

 Expl. Zuiii and Col. R., 1853, 68, part (California). — Heermann, Journ. Ac. 

 Nat. Sci. Phila., ii, 1853, 264 (California).— Newberry, Rep. Pacific R. R. 

 Surv., vi, 1857, 80 (Des Chutes R., Oregon, etc.).— Seeboum, Cat. P.irds 

 Brit. Mus., v, 1881, 332, part (California; British Columl)ia). 



[Sialia] ocridentalis Heine and Reichenow, Nom. Mus. Hein., 1890, 6 (Califnr- 

 nia).— Sharpe, Hand-list, iv, 1903, 184. 



Sialia mexicana occidcntahs Ridgway, Auk, xi, Apr., 1894, 154, part (monogr.; 

 localities in California; Columbia R.; British Columbia; San Pedro Marlir 

 Mts., Lower California); Man. N. Am. Birds, 2d ed., 1896, 612.— American 

 Ornithologists' Union Committee, Auk, xii, 1895, 166; Check List, 2d ed., 



a Ten specimens. 



