396 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



ee. Smaller, the back, etc., browner gray; wing 53.5 in male, 52.5 in female; 

 tail 46 in male, 44.5 in female. (Eastern Florida.) 



Feuthestes carolinensis impiger (p. 406) 

 cc. Sides and flanks gray, like back. (Highlands of Mexico, north to southern 



Arizona. ) Penthestes sclateri (p. 407) 



hh. A white superciliary streak. (Mountain districts of western United States.) 



Penthestes g^ambeli (p. 408) 

 aa. Pileum brown. 

 6. Back grayish brown; tail 54.5-68. 

 c. Sides of neck white; sides and flanks pale wood brown or brownish buff. 

 (Penthestes ductus. ) 

 d. Darker and browner above; the sides light wood brown or fawn color. 



(Northern Europe.) Penthestes cinctns cinctns (extralimital). « 



dd. Paler and grayer above; the sides much paler fawn color or cinnamon-buff. 

 e. Bill larger (culmeu 10). (Eastern Siberia. ) 



Penthestes cinctns obteotns (extralimital). 6 

 ee. Bill smaller (culmen 9-9.5). (Northern Alaska.) 



Penthestes cinctns alascensis (p. 411) 



cc. Sides of neck gray; sides and flanks rusty brown or cinnamon-brown. 



[Penthestes hudsonicus. ) 



d. Larger (wing 66 or more in male, 65 or more in female; tail 64 or more in 



male, more than 63 in female). 



e. Paler and browner above; the throat more sooty. (Labrador to Alaska. ) 



Penthestes hndsonicns hndsonicns (p. 412) 

 ee. Darker and less brown above; the throat blacker. (Northern Eocky 

 Mountain district, from northern Montana to Cook Inlet, Alaska. ) 



Penthestes hndsonicns colnmbianns (p. 414) 



dd. Smaller (wing averaging 63.9 in male, 60.8 in female; tail averaging 60.6 



in male, 59.1 in female). (Southern Labrador, New Brunswick, Nova 



Scotia, and northern New England to northern New York. ) 



* Penthestes hudsonicus littoralis (p. 415) 



65. Back chestnut; tail 43.5-54.' (Penthestes rufescens. ) 



a Parus cinctus Boddaert, Tabl. PI. Enl., 1783, 46 (based on LaMesange de Sihhie 

 Daubenton, PI. Enl., pi. 708, fig. 3); Dresser Birds, Europe, lii, 1871, 112; Gadow, 

 Oat. Birds, Brit. Mus., viii, 1883, 35, part; Poecila cincta PrazAk, Orn. Jahrb., vi. 

 Heft 2, March-April, 1895, 87 (monogr. ). — [Parus'] s^biricus Gmelin, Syst. Nat., i, 

 1788, 1013 (based on Siberian Titmouse Latham, Gen. Synop., ii, 556); IPoecila] 

 sibirmis Bonaparte, Consp. Av., i, 1850, 230; Ploedle'] siMrica Cabanis, Mus. Hein., i, 

 1850, 91; Poecile sibirica vera Brehm, Naumannia, 1856, 369. — Parus lapponicus Lun- 

 dahl, Notis. Fauna et Flora Fenn. Forh. Helsingf., 1848, pt. i, 1, pi. 1, fig. 1. 



6 (?) Poecila sibmicrorhynchos Brehm, Naumannia, 1856, 369 (Siberia). — Parijis 

 sibiricas (not of Gmelin) Eadde, Reis. S. 0. Sibir., ii, 1861, 198; Poecila sibirica 

 Taczanowski, Bull. Soc. Zool. France, i, 1876, 363. — Poecile cincta (not Parus cinctus 

 Boddaert) Swinhoe, Proc. Zool. Soc. Lond., 1871, 362 (near Pekin, north China); 

 David and Oustalet,Ois. Chine, 1877, 288. — Parus (Poecila) oWt'cfus Cabanis, Jourii. 

 fiirOrn., xix. May, 1871, 237 (Lake Baikal, south Siberia); Poecilia oblecta Taczan- 

 owski, Journ. fiirOrn., 1872,443; Plarus'] obteclus Gadow, Cat. Birds Brit. Mus., viii, 

 1883, 35, part (synonymy, under P. cinctus; excl. syn. Poecila affinis Prjevalsky); 

 Poedladnctaobtecta'PTa.zA.'k, Orn. Jahrb., vi, Heft 2, March-April, 1895, 90 (monogr. ). — 

 (?) Parus jfnsescensSharpeand Dresser, Birds of Europe, iii, 1871 [129], in text (south 

 shores of Lake Baikal; coll. Sh£|,rpe and Dresser); Parus anctus . . subsp. grisesccns 

 Seebohm, Ibis, 1879, 2. (Yenesai River, Siberia); Poedla cincta grisescens Prazdk, 

 Orn. Jahrb., vi. Heft 2, March-April, 1895, 91 (monogr.).— P[ar«s] (P[oedle']). 

 dnctus obtectus Hellmayr, Tierreich, 18 Lief., March, 1903, 70, part. 



