BIRDS OF NORTH AND MIDDLE AMERICA. 459 



Slitto'] pusilla pi/ffiiura Riihiway, JUill. Eshcx Iiist., vi, Oct., 1874, 17H (<■. .«lope 



Sierra Nevada). 

 Srtta pusilla . . . var. 7i//r//H,<Trt IIenshaw, Rep. Orn. Spec. Wheeler'w Hurv., 1874, 



40 (Utah), 73 (near Fort Garland, Colorado, June; haVnts), 100 (Inscription 



Rock, New Mexico, July 24; near ponrce of (iila R., New Mexico; habits), 



155 (Arizona). 



SITTA PYGM.^A LEUCONUCHA Anthony. 

 WHITE-NAPED NUTHATCH, 



Similar to S. j). pygmpea^hwt larger, especially the l)ill; color of 

 pileum and hind neck grayer, the latter with the huffy whitish or pale 

 buff spot decidedly larger; gray of back, etc., less bluish, and under 

 parts less strongly huffy. 



Adult male.—'LQxigtXi (skins), 95.5-111 (102.5); wing, 65.5-T(> (66.8); 

 tail, 34.5-38.5 (36.7); culmen, 15-17.5 (16.3); tarsus, 15-16.5 (16); 

 middle toe, 11-12 (11.5).« 



Adult female.— Length, (skins), 95.5-108.5 (101.8); wing, 65-69.5 

 (67); tail 32.5-37.5 (35.3); culmen, 15-16.5 (15.7); tarsus, 15.5-16.5 

 (16); middle toe, 11.5-12.5 (11.9).« 



San Pedro Martir Mountains, northern Lower California, and 

 northward to mountains of San Diego County, California (Pine Valley, 

 Laguna, etc.). 



Sitta pygmxa leuconucha Anthony, Proc. Cal. Acad. Sci., 2d ser.,ii, Oct. 11, 1889, 

 77 (San Pedro Martir Mts., Lower California; coll. A. W. Anthony); Zoe, 

 iv, 1893, 246 (San Pedro Martir Mts.). — American Ornithologists' Union 

 Committee, Auk, vii, 1890, 64; Check List, 2d ed., 1895, no. 730a.— Ridg- 

 WAY, Man. N. Am. Birds, 2d ed., 1896, 610. 



Sljita} pygmaea leuconucha Hellmayr, Tierreich, 18. Lief., 1903, 191. 



Family CERTHIID^. 



THE CREEPERS. 



Small "tcn-primaricd," slender-billed, scansorial acutiplantar 

 Oscincs with the bill more or less curved (at least terminally), the 

 hallux (without claw) shorter than outer toe (without claw), the outer 

 toe reaching to or be^^ond middle of penultimate phalanx of middle 

 toe, the inner toe reaching only to second joint of middle toe or (in 

 Climactc^'is) not so far; claws large, very strongly curved, that of the 

 hallux as long as or longer than the digit (except in Ch'niaetei'ix)\ nos- 

 tril wholly exposed, linear, longitudinal, overhung by a distinct oper- 

 culum; rictal bristles obsolete; tenth (outermost) primary more than 

 one-third (sometimes more than one-half) as long as ninth. 



Bill \ariable as to relative length and extent of curvature, hut never 

 conspicuously shorter than head, nor straight at tip; culnuMi distinctly 



« Ten specimens. 



