BIRDS OF NORTH AND MIDDLE AMERICA. 447 



Siffa carollvensi.^t hnjiuitr Brewstek, De.scr. seven supposed new .species X. Am. 

 Birds, Feb. 17, 1881, 149; Auk, viii, Apr., 1891, 149 (Sierra de la Lajruna, 

 s. Lower California; coll. W. Brewster); Bull. Mas. Comp. Zool., xli, 1902, 

 203 (Sierra de la Lagnna, resid(>nt; crit. ). 



(S'[''''^'] roroKne».sv'.s /a^«nae Hellmayk, Tierreich, IS Lief., 190:5, 189. 



SITTA CAROLINENSIS NELSONI Mearns. 

 ROCKY MOUNTAIN NUTHATCH. 



Siiniliir to -V. e. aculeata but larger, with .stouter bill; undcrpart.s 

 less pureh^ white, more strongh:' shaded with gray on sides and flanks; 

 white subtorminal spaces on lateral rectrices larger. 



Adult /y/r//tf.— Length (skins), 124-143 (131.4); wing, 8S.5-95.5 

 (91.4); tail, 43-52 (48.1); culmen, 18-23 (19.8); tarsus, 17-19 (18); 

 middle toe, 13-15 (14.5)." 



Adult female. — Length (skins), 117-134 (126.6); wing, 87-94 (90.9); 

 tail, 43-51 (45.4); culmen, 17-20 (18.6); tarsus, 17-18.5 (17.8); middle 

 toe, 14-15.5 (14.4).* 



Mountain districts of western United States and British Columbia, 

 east of the Sierra Nevada and Cascade ranges, and northern Mexico; 

 north to British Columbia, Alberta, and western Manitoba (Big Plain, 

 Portage la Prairie, Red River Valley, etc.); east to eastern border of 

 Great Plains (Omaha, Nebraska, Vermilion, South Dakota, etc.), and 

 w^estern Texas (to about the one hundredth meridian); south to States 

 of Sonora, Chihuahua, and Coahuila, northern Mexico. 



Sitta carolinensif: (not of Latham) Gambel, Proc. Ac. Nat. Sci. Phila., ill, 1846, 

 112, part (Rocky Mts. ). — Woodhou.se, in Sitgreaves's Expl. Zufii and Col. 

 R., 185.3, 66, pavt (w. Texas to Arizona). — Allen, Bull. ;Mus. Comp. Zool., 

 iii, 1872, 148 (Colorado City, Colorado). — Gadow, Cat. Birds Brit. Mus., 

 viii, 1883, 35.3, part (w. side Rocky Mts.).— (?)Lloyd, Auk, iv, 1887, 298 

 (Tom Green and Concho counties, w. Texas, resident). — Cooke, Bull. 37, 

 Col. State Agric. Coll., 1897, 121 (Colorado, resident). 



S[itta] carolinensis Gambel, Journ. Ac. Nat. Sci. Phila., ii, 1847, 83, ])art (Rocky 

 Mts.). 



Sitta aculeata (not of Cassin) Baikd, Rep. Pacific R. R. Surv., ix, 1858, 375, part; 

 ed. 1860 (Birds N. Am.), atlas, pi. 33, fig. 3; Cat. N. Am. Birds, 1859, no. 

 278, part; Review Am. Birds, 1864, 86, part. — Coues, Proc. Ac. Nat. Sci. 

 Phila., 1866, 78 (Fort Whipple, Arizona).— Cooper, Am. Nat., iii, 1869, 74.— 

 Aiken, Proc. Bost. Soc. N. H., xv, 1872, 195 (Colorado). — Merriam, Rep. 

 U. S. Geol. Surv. for 1872 (1873), 672 (Lower Geyser Basin, Wyoming), 

 713. 



Sitta carolinensiK, var. «c«/mta Allen, Bull. Mus. Comp. Zo(jl.,iii, no. (?, July, 

 1872, 161 (Mount Lincoln, Colorado); Proc. Bost. Soc. N. II., xvii, 1874, 49 

 (Yellowstone and Musselshell rivers, Montana).— Ridcwav, Bull. Essex 

 Inst., v, 1873, 180 (Colorado). — Bairo, Bkkwek, and Ridcwav, Hist. N. Am. 

 Birds, i, 1874, 117, part. — Coues, Birds, N. W., 1874, 24, part. — Tkiitk, in 

 Coues' s Birds N. W., 1874, 230 (mountains of Colorado; habits). 



fl Thirty specimens. ^ Seven specimens. 



