41 G ORNITHOLOGY. 



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

 a geographical race. 



List of specimens, 



439, S ad.; Carson City, Nevada, March 10, 186S, 0— IO5— 3|— 3. Bill, pure 

 blackish-plumbeous, basal half of lower maiulible, opaque, bluish, or milky-white; iris, 

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



448, i ad.; Carson, March 21. Gj^lOJ— 3^— 3. Same remarks. 



449, 9 ad.; (mate of preceding.) 5i — lOg — 3fi — 3. Same remarks. Tarsi aud 

 toes, sepia-slate. 



487, 9 ad.; Carson, April 3. 6 — 11 — 33 — 3. Same remarks. 

 491, i ad.; Carson, April 4. 6—10^—311—3. Same remarks. 



SiTTA CANADENSIS, 

 Red-bellie<l Niitliatch. 



Sitta canadensis, Linn., Syst. Nat., I, 170(5, 177.— Baibd, B. N. Am., 1858, 370; 

 Cat. N. Am. B., 1859," No. 279; Review, 1861, 86.— B. B. & R., Hi.st. N. Am. 

 B., 1, 1874, 118, pi. VIII, figs. 7, 8.— Cooper, Orn. Cal., .'54.— CouES, Key, 1872, 

 83, fig. 27 ; Check List, 1873, No. 39 ; B. N.W., 1874, 25.— Qenshaw, 1875, 

 174, 



An inhabitant in sunnner of the pine woods exchisively, 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 

 i-anges. 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, 1808. 4f-8yV- 

 ( ? ) — 2J. Bill, uniform blackish-plumbeous, basal half of lower mandible, abruptly, 

 bluish white; iri.s, umber-brown; tarsi, dull wax-green; toes, more yellowish. 



