Bill, .70 long, .17 deep. Black spots on tertials sharply defined. Hab. Eastern Province North America … var. carolinensis.
Bill, .80 long, .14 deep. Black spots on tertials obsolete. Hab. Middle and Western Province United States, south to Cordova, Mexico … var. aculeata.
S. canadensis. Belly brownish-rusty. A black stripe through eye. Hab. Whole of North America.
B. Crown not black.
S. pusilla. Crown light hair-brown; hind toe much longer than the middle one. Hab. South Atlantic and Gulf States.
S. pygmæa. Crown greenish-plumbeous; hind toe about equal to middle one. Hab. Western and Middle Province United States, south to Xalapa.
Sitta carolinensis, var. carolinensis, Lath.
WHITE-BELLIED NUTHATCH.
Sitta europæa, var. γ, carolinensis, Gm. S. N. I, 1788, 440. Sitta carolinensis, Lath. Ind. Orn. I, 1790, 262; also of all other American writers.—Reichenbach, Handbuch, Abh. II,, 1853, 153, tab. dxiii, figs. 3563, 3564.—Baird, Birds N. Am. 1858, 374, pl. xxxiii, fig. 4; Review, 86.—Max. Cab. Jour. VI, 1858, 106. Sitta melanocephala, Vieill. Gal. I, 1834, 171, pl. clxxi.
Other figures: Wilson, Am. Orn. I, pl. ii, fig. 3.—Aud. Orn. Biog. II, pl. clii.—Ib. B. A. IV, pl. ccxlvii.