1886.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM 373 



and less worn than that of Xo. 106458, described above, with which it 

 otherwise agrees very well, except that the speculum is divided as in 

 the female, No. 9G62. 



The other specimen is a younger bird, corresponding exactly to No. 

 56308, described on a previous page, but being collected May 17, it is in 

 a more worn plumage and the bill is pale yellow. It is evidently a bird 

 in its tirst spring. 



I have, consequently, now before me the following series of Turdus 

 alpestris : (1) young bird in nesting plumage ; (2) young in the first 

 winter; (3) young in the first spring; (4) old male in spring; (5) old 

 male in autumn ; (6) okl female in breeding plumage. 



Add thereto the different habitat and the difference in voice, as 

 pointed out by Brehm, and there can be no room for doubt that there 

 are two species of King-Thrushes in Europe. 



Smithsonian Institution, May 29, 1886. 



