40 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



narrow wedge-shaped streaks of dusky; chest with large triangular 

 spots of dusky grayish brown or sooty, these more wedge-shaped on 

 upper chest, broader and more rounded on lower chest; upper breast, 

 especially on lateral portions, spotted with grayish brown or brownish 

 gray; sides and flanks light brownish gray; bill dusky brown or 

 blackish, the basal half (approximately) of mandible pale yellowish 

 (pale grayish flesh color or lilaceous in life); iris dark brown; legs 

 and feet light horn color (in dried skins) . 



Adults in autumn and winter. — Similar to spring and summer 

 adults, but more brightly colored, the general color of upper parts 

 more brownish (olive-brown), upper tail-coverts and tail more ruddy 

 brown (chestnut-brown or mars brown), and chest more strongly 

 bufl'y, with spots darker (sometimes nearly black). 



Young. — Above brown, as in adults, but pileum, hindneck, back, 

 scapulars, and lesser wing-coverts streaked with buffy, the upper 

 tail-coverts broadly tipped with tawny-ochraceous, the middle wing- 

 coverts with a mesial wedge-shaped or guttate mark of buff; under 

 parts dull white,.jnore or less strongly tinged with buff on chest, etc., 

 the chest and sides of lower tlu'oat conspicuously spotted, the breast, 

 upper abdomen, and sides barred, with black or dusky; a blackish 

 submalar streak along each side of tlu'oat. 



Adult male. IjQwgih. (skins), 140-163 (154); wing, 85.5-90.5 (87.8); 

 tail, 61.5-69.5(64.8); exposed culmen, 12-13.5 (12 J); tarsus, 27.5-30 

 (28.8); middle toe, 15.5-17 (16.1).« 



Adult female.—Le\\gi\i (skins), 144-159 (153); wing, 81-84.5 (83.2); 

 tail, 58.5-65 (62.8); exposed culmen, 12-13.5 (13.1); tarsus, 28-29.5 

 (28.6); middle toe, 15.5-16.5 (16.1).^ 



Breeding in the coast district of Alaska north of Cross Sound, from 

 Point Gustavus, Juneau, etc., northward and westward to Kadiak 

 Island, Alaska Peninsula, Nushagak, White Pass, etc.; in winter 

 southward to Lower California (Sierra San Gertrude; La Paz; Casa 

 Pintada), Sonora (Nacosari; Alamos; Baradehuachy), Chihuahua 

 (Rio Chico), Tamaulipas (Sota la Maria), and Texas (El Paso; 

 Concho, and Tom Green counties; San Antonio; Langtry; Leon 

 Springs; mouth of Pecos River); migration route mostly coastwise, 

 but including eastern Oregon (Fort Klamath, etc.), Nevada (upper 

 Humboldt Valley), New Mexico (Fort Bayard), etc. 



'i [Turd as] aonalaschkae Gmelin, Syst. Nat., i, pt. 2,1788, 808 (based on Aoon- 

 alashka Thrush Latham, Synopsis Birds, ii, pt. 1, 23; Unalascha Thrush 

 Pennant, Arctic ZooL, ii, 338). 



Turdus aonalaschkm Ridgway, Proc. U. S. Nat. Mus., iii, 1880, 1, part (orit.); 

 Proc. U. S. Nat. Mus., xvi, 1893, 665 (Kadiak I., Alaska).— Seebohm, 

 Cat. Birds Brit. Mus., v, 1881, 200, part. — American Ornithologists' 

 Union, Check List, 1886, no. 759, part.— Bryant (W. E.), Bull. Cal. Ac. 

 Sci., ii, 1887, 316 (Guadalupe I., Lower California, 3 specs., Jan., Mar.). — 



a Ten specimens. b Seven specimens. 



