416 ORNITHOLOGY. 



altogether. It is \vith hesitation that we refer this bird to S. carolinensis, as 

 a geographical race. 



List of specimctis. 



439, i ad.; Carson City, Nevada, March 10, 1868. C—IOJ— 3|— 3. Bill, pure 

 l)lackish-plnmbeou8, basal half of lower mandible, oi)a(iuc, bluish, or milky-white; iria, 

 very dark bister; tarsi and toes, sepia-black. 



448, (? fl(7.; Carson, March 21. 6^—10^—33—3. Same remarks. 



449, 9 ad.; (mate of preceding;.) 5| — lOg — 3|^ — 3. Same remarks. Tarsi and 

 toes, sepia-slate. 



487, 9 ad.; Carson, April 3. G — 11 — 3;| — .i. Same remarks. 

 491, S ad.; Carson, April 4. — lOJ — 3{i — 3. Same remarks. 



SiTTA CANADENSIS. 



Red-bellied Niitliatrli. 



Sitta canadenHtH, LiNN., Syst. Nat., I, 1760, 177.— Baird, B. N. Am., 1838, 370; 

 Cat. N. Am. B., 1859, No. 279; Review, 1861, SO.— B. B. & R., Hist. N. Am. 

 B., 1, 1874, 118, pi. vili, figs. 7,8.— Cooper, Orn. Cal., 54.— COXTES, Key, 1872, 

 83, fig. 27; Check List, 1873, No. 39; B. N.W., 1874, 25.— Hensiiaw, 187."., 

 174. 



An inhabitant in summer of the pine woods exclusively, this species 

 was met with, at that season, only in the thickest or most extensive conifer- 

 ous forests, such as those on the Sierra Nevada, Wahsatch, and Uintah 

 ranges. In all localities where observed it was much less common, how- 

 ever, than either S. aculeata or S. pygmcea, but wherever found made its 

 presence known by the loud, penny-trumpet toot, so peculiar and so charac- 

 teristic of the species. Unlike the other two species, this one appears to make 

 more or less of a vertical migration, since in September we found it common 

 in the aspen groves along the streams in the upper Humboldt Valley. Later 

 in the same month it was also common among the pines of the lofty Clover 

 Mountains, at an altitude of near 11,000 feet. 



List of specimens. 



914, 9 ad.; Camp 24, head of Humboldt Valley, September 10, 1868. 41-8^?^— 

 (If) — 2^. Bill, uniform blackisli-phinibeous, basal half of lower mandible, abruptly, 

 bluish white; iris, umber-brown; tarsi, didl wax-green; toes, more yellowish. 



