( 92) 



mens in my possession, as well as those in the extensive collections 

 of Messrs. Lawrence and Bell, it is found that the above Thrush 

 was first described in the Fauna Boreali, or Northern Zoology, by 

 Swainson and Richardson, under the name of Merula Wilsonii — 

 mistaking it, as we suppose, for the T. Wilsonii of Bonaparte, and 

 describing the true T. Wilsonii under the name of M. minor, which 

 applies to the Hermit Thrush, T. minor, of Gmelin. As the matter 

 now stands, we feel at liberty to separate it from other species, by 

 applying the name of [T. olivaceus,] Olive-backed Thrush. 



The Olive-backed Thrush is quite common with us during spring 

 and autumn : from never having been able to procure a specimen 

 during summer, we suppose that it goes farther north to breed. It 

 inhabits similar situations with T. Wilsonii. with which it is often 

 associated. 



FAMILY MOTACILLIN,E. 



WAGTAILS. 



GENUS SEIURUS— SWAINSON. 



WOOD WAGTAILS. 

 [In these birds the bill is of moderate length, straight, slender, compressed 

 toward the end, broader than high at base ; bristles slight ; wings and tail of 

 moderate length, the latter even ; tarsi, feet and toes slender, as is the genera! 

 form.] 



SEIURUS AUROCAPILLUS— LATHM. 



GOLDEN-CROWNED WOOD WAGTAIL. 



Golden-crowned Thrush, Turdus aurocapillus, VVils. Amer. Orn. 

 Sylvia aurocapilla, Bonap. Syu. 



Seiurus ajrocapillus, Golden-crowned accentor, Sw. & Rich. 

 Golden-crowned Thrash or Oven-Bird, Turdus aurocapillus. Nutt. Man. 

 Golden-crowned Thrush, Turdus aurocapillus, Aud. Orn. Biog. 



Specific Characters-First quill scarcely longer than the second, 

 which is about equal to the third. Adult male with the crown 

 brownish-orange, bordered on either side with black ; upper parts 

 olive ; lower parts white, with dusky markings on the breast and 



