412 ORNITHOLOGY. 



Lint of specimen. 



333, i ad.; 5i-8S-2,^-2A-y-3-'Jt-U. 334, 9 ad.; 5g-SiJ-2}|-2.i-jV-S 

 —2^—1^. 33r>, <?flrf.; 5/y— S§— 2J— 2A— g— f^— 24— 1|. Oarson City, Nevada, No- 

 veuiber27, 18G7. Bill, piuuibeous black ; iris, deep hazel ; tarsi and toes, dull plumbeous. 



450, (? ad.; Carson City, March 21, 18GS. 5/5— 8§— 3— 2*. Bill, black ; iris, burnt- 

 sienna; tarsi and toes, plumbeous black. 



Paeus atricapillus. 



Black-rapped Chickadee. 



/S. septentrionuUs — Louff -tailed Chickadee. 



Farm septentrionuUs, Harris, Pr. Ac. Nat. Sci. Philad., 1845, 300.— Baird, B. 



N. Am., 1858, 389; Cat. N. Am. B., 1850, No. 289; Review, 1864, 79. 

 ParuH atricapillus var. septentrionalis, Allen, Bull. Mus. Comp. Zool., Ill, 1872, 



174.— COUES, Key, 1872, 81 ; Check List, 1873, No. 31a; B. N.\Y., 1874, 21. 



— B. B. & R., I, 1874, 99, pi. vn, fig 2.— Hensoaw, 1875, 170. 

 Parus septentrionalis var. albescens, Baird, B. N. Am., 1858, p. xxxvii; Cat. N. 



Am. Birds, 1859, No. 289a. 



;/. occidentalis — Western Chickadee. 



Parus occidentalis, Baird, B. N. Am., 1858, 391; Cat. N. Am. B., 1859, No. 291; 



Review, 1864, 81.— Elliot, Illustr. Am. B., I, pi. viii.— Cooper, Orn. 



Cal., 45. 

 Parus atricapillus var. occidentalis, CouES, Key, 1872, 81 ; Check List, 1873, No. 



31c.— B. B. & R., Hist.N. Am. B., I, 1874, 101, pi. Vli, fig. 3. 



The common Black-capped Chickadee was apparently wanting in all 

 portions of the western depression of the Great Basin, and even on the 

 eastern side it was so extremely rare that none were seen except in the 

 valley of the Provo River, where but a few families, with their full-grown 

 young, were met with. They kept in the willow thickets, and seemed very 

 gregarious, in marked contrast to the Mountain Chickadee (P. montanHs) 

 and that eastern species, the Southern Black-cap, or Carolina Chickadee 

 (P. carolinensis). Their notes were also very different, the usual utter- 

 ances being a sort of twittering, resembling but little the distinct and sharp 

 notes of the species named. 



Inst of specimens. 



1392, 9 jut:; 5/^— 7f. 1393, S jia\; SyV-^J- 1394, <J juv.; SJ— 8§. Provo River, 

 Utah, July 11, bSliO. Bill, black; interior of mouth, yellow ; iris, dark browu; tarsi 

 and toes, fine ashy;blue. 



