BIRDS OF NORTH AND MIDDLE AMERICA. 



603 



form of spots rather than bars); under tail-eoveits clear rusty ])ro\vn 

 or russet barred with l)hick and tipped with wliite or witii saj-ittate 

 subterminal marks of white; maxiUa blackish or dusky brown with 

 paler tomia; nnuulihh" li.uhter ])rown; iris brown; le^-s and feet 



brownish. 



j^^^^;,^. —Essentially lik(^ adults, l)ut brown of upper parts more 

 rufescent, flanks and under tail-coverts less distinctly barred (l)ars 

 sometimes obsolete), and feathers of under parts more or less dis- 

 tinctly maro-ined with brown or dusky. 



Adult y//«/6^— Length (skins), 102-11-1: (110); wing, 50-5-1 (.51.7); 

 tail, 33-35 (34.1); exposed culmen, 13-15 (14); tarsus, 17-21 (19.5); 

 middle toe, 13-15 (14.2).« 



Adult /;^y;^a76^— Length (skins), 99-113 (100); wing, 4S.5-51.5 (50); 

 tail, 31.. 5-33 (32.5); exposed cuhiien, 13-15 (14.2); tarsus, 18.5-20 

 (19.2); middle toe, 12.5-15 (13.7).^ 



St. George Island, Prybilof group, easternmost Aleutian islands 

 (LTnalaska;"Akutan;''^lIn;.:a;'^ Amaknak'), and part of Alaska penin- 

 sula (Belkofski')- 



Troglodytes alascensis Baird, Trans. Chicago A(\ Sci., i, 1869, P,lo, pi. 30, fig. 3 

 (St. George Island, Prybilof group, Alaska; coll. U. S. Nat. Mus.).— Dall 

 and Bannister, Trans. Chicago Ac. Sci., i, 1869, 280 (St. George I.).— 

 Bairi), Brewer, and Ridgway, Hist. N. Am. Birds, i, 1874, pi. 9, fig. 8.— 

 Ste.ine(;ek, Zeitschr. ges. Orn., i, 1884, 11, part (monogr.).— American Orni- 

 thologists' Union, Check List, 1886, no. 723, part.— Turner, Contr. Nat. Hist. 

 Alaska, 1886, 181, part, pi. 9, upper fig. (Unalaska; Unga I.; Alaska penin- 

 sula at Belkofski).— Nelson, Rep. Nat. Hist. Coll. Alaska, 1887, 210 (St. 

 George I.; Akutan; Unalaska; habits).— RiixiWAY, Proc. U. S. Nat. Mus., 

 xvi, 1893, 665 (Unalaska). 

 T[roglodytes] alascensis Ridgway, Man. N. Am. Birds, 1887, 555, part. 

 [Anorthara'] alascensis Coues, Key N. Am. Birds, 1872, 87. 



Anorthura alascensis Coves, Birds Col. Val., 1878, 178, in text.— Ridgway, Proc. 

 U. S. Nat. Mus., iii, 1880, 170, 215, part; Nom. N. Am. Birds, 1881, no. 66, 

 part.— Sharpe, Cat. Birds Brit. Mus., vi, 1881, 273 (Amaknak I., near Una- 



« Nine specimens. 

 b Six specimens. 



Specimens from St. George Island compare in measuremiMits with those from 

 Unalaska as follows: 



Locality. 



MALKS. 



One iidtilt mall! from St. (k-orgo Isluiul .. 

 Eight adult iiiak-s from Uniilaska Island. 



FEMALKS. 



One adult femak> from St. George Island 

 Five adult females from Unalaska Island 



Ex- 

 posed 

 culmen. 



15 

 14.1 



20 

 19.1 



20 

 19.1 



Middle 

 toe. 



14 

 14.2 



13.5 

 13.8 



<"Speciniens from tlu-sc locaiitifs not seen by nii'. 



