416 BULLETIIsr 50, UNITED STATES NATIONAL MUSEUM. 



John, New Brunswick; nesting habits) .—American Ornithologists' 

 Union, Check List, 1886, no. 740, part. — Allen, Bulk Am. Mus. N. H., i, 

 1886, 261 (Massachusetts records).— Chajjbourne, Auk, iv, 1887, 107 (White 

 Mts., New Hampshire, above 3,000 ft.); xiii, 1896, 346 (Plymouth, Massa- 

 chusetts, 1 spec, June 5, 1896). — Faxon and Allen, Auk, v., 1888, 153 

 (Mount Lafayette, New Hampshire, 3,900 ft.; 2 specs., July 12).— Bishop, 

 Auk, vi, 1889, 149 (Magdalen Islands, breeding). — Ealph and Bagg, Auk, 

 vii, 1890, 232 (Remsen, Oneida Co., New York, 1 spec, Dec. 25, 1886).— 

 Kimball, Auk, vii, 1890, 291 (Worcester Co., Massachusetts, 1 spec, Mar. 

 17, 1890). — Faxon, Auk, vii, 1890, 407 (Sutton, Vermont, several young, 

 Aug. 16, 1889; Arlington, Massachusetts, Oct. 18 and Nov. 17 to Apr. 5).— 

 DwiGHT, Auk, X, 1893, 14 (Prince Edward I., breeding).— Allen (F. H.), 

 Auk, xiii, 1896, 345 (Stratton Mt., Vermont, 3,800 ft., June 29).— Faxon 

 and Hoffmann, Birds Berkshire Co., Massachusetts, 1900, 12 (Gray lock 

 Mt., 1 spec, Dec, 1889). 



[Parus'] htidsonicus Coues, Key N. Am. Birds, 1872, 81, part. 



Plarus] Imdaonicus Coues, Key N. Am. Birds, 2d ed., 1884, 267, i)art. — Ridg- 

 WAY, Man. N. Am. Birds, 1887, 564, part. 



P[arM.s'] (Poecile) hudsonicvs JiudsonicKi^ Hellmayk, Tierreich, J8 Lief., Mar., 

 1903, 71, part. 



Parus h'udsonicun, var. lilloralis Bryant, Proc Bost. Soc. N. IL, ix, 1865, 368 

 (Yarmouth, Nova Scotia). 



Parus hudsonicus littoralis Cqapma:s, Bull. Am. Mus. N. H., xvi, Aug. 18, 1902, 

 245, part (diagnosis; geog. range). 



PENTHESTES RUFESCENS RUFESCENS (Townsend). 

 CHESTNTTT-BACKED CHICKADEE. 



Adults in spring and summer. — Pileum and hindneck plain sepia 

 brown, becoming darker along lateral margin, the lores and post- 

 ocular region dark sooty brown or blackish; back, scapulars, and 

 rump plain chestnut; upper tail-coverts and lesser wing-coverts 

 brownish gray or hair brown, the latter more or less tinged with 

 chestnut; Avings and tail deep brownish gray with paler gray edgings, 

 these broader and paler (sometimes nearly white) on tertials and ter- 

 minal portion of greater w"ing-co verts; malar region, chin, throat, and 

 upper part of chest uniform dark sooty brown, abrupth^ defined pos- 

 teriorly; sides and flanks (broadly) chestnut; under parts of body 

 otherwise (medially) white; under tail-coverts more or less tinged with 

 brown; bill dusky; iris brown; legs and feet dusky brownish (grayish 

 in life ?)• 



Adidts in autumn and wmter. — Similar to the spring and sunnner 

 plumage, but brown of pileum and hindneck darker, more sootv, 

 sometimes nearly clove brown. 



Young. — Similar to adults, l)ut chestnut of back, etc., duller and 

 that of sides and flanks both duller and paler. 



Adult wa^^.— Length (skins), 107.5-120.5 (112); wing, 59.6-64 



