204 TUflDID^, 



Turdus silens, Vieill. Enci/cl. Meth. ii. p. 047 (1823). 



Tui-dus wilsoni, Bj}. Journ. Phil. Ac. iv. p. 34 (1824) ; Aiuluh. Orn. 



JBioyr. ii. p. 362, pi. clxiv. (1834) ; Bj). Comp. List B. Eur. 8/- N. 



Amer. p. 17 (1838) ; Audub. B. Amer. iii. p. 27, pi. cxlv. (1841); 



Bp. Consp. i. p. 271 (1850). 

 Merula luiuor {Gntel.), Stv. Faun. Bor.-Amer. Birds, p. 179, pi. xxxvi. 



(1,^31). 

 Merula wilsoiiii {Bonap), Breiuer,P. Bost. Son. N.H. i. p. 191. (1844) 

 Turdus brimneus. Bracer, Journ. Bost. Sac. vi. p. 304 (1852). 

 Turdus (Hylocichla) fuscescena (Steph.), Coues, Birds Colorado Vail. 



p. 39 (1878). 



In the adult nude in spnng plumage tlie general colour of the 

 upper parts is russet- brown, greyer on the inner webs of the quills ; 

 lores grey ; ear-coverts brown, with pale centres ; no trace of eye- 

 stripe ; cheeks, lower throat, and breast pale buff, each feather 

 having a brown, somewhat obscurely defined fan-shaped terminal 

 spot ; rest of nnderpnrts white, shading into brown on the flanks, 

 and occasionally showing traces of pale brown or buff in other 

 parts ; axillaries white, with pale-brown centres ; under wing- 

 coverts white, with pale-brown bases ; inner margin of quills pale 

 brown, shading into white on the entire basal portion of the inner 

 webs of the quills. Bill dark brown, pale at the base of the under 

 mandible. Wings with the third primary slightly the longest, 

 second jjrimary intermediate in length between the fourth and fifth, 

 bastard primary 0'65 to 0'45 inch. Legs, feet, and claws pale 

 broAvn. Length of wing 4'1 to 3-8 inches, tail 3'0 to 2-7, culmen 

 0-71 to 0-G2, tarsus 1-22 to 1-15. 



The female does not differ from the male. No important change 

 is produced by the autumn moult. Birds of the year have traces of 

 pale tips to some of the wing-coverts. Young in first plumage 

 appear to be undescribed. 



"Wilson's Thrush breeds in South Canada and in the Northern 

 and Central United States from the Rocky Mountains to the 

 Atlantic. A few winter in the Gulf States ; but the majority 

 migrate further south, where they have been obtained in Cuba, 

 Panama, and South America north of the Amazon. 



a. Ad. sk. Pennsylvania (J. Kuder). H. Seebohm, Esq. [P.]. 



b, c, d. Ad. sk. Ann Arbor, Michigan. Prof. J. B. Steers [P.]. 

 e. Ad. sk. 49th Parallel (Daiuson). Boundary Commission. 



16. Turdus dryas. 



Malacocichla dryas, Gould, P. Z. S. 1854, p. 285, pi. Ixxv. ; Sclat. Sf 



Salv. Ibis, 1859, p. 7. 

 Malacocichla maculata, Scl. P. Z. S. 1858, p. 64. 

 Catharus drvas (Gould), Sclater, P. Z. S. 1859, p. 324; Baird, Revieiv, 



i. p. 10 ( 1864) ; Salviri, P. Z. S. 1866, p. 69 ; Sclat. ^ Salv. Nomencl. 



Av. Keotr. p. 1 (1873) ; Salv. Sf Godm. Biol. Centr.-Anur. Zool., 



Aves, i. p. 7 (1879). 

 Catharua maculatus (Sclater), Sclat. P. Z. S. 1859, p. 324 ; id. 



