30 REVIEW OP AMERICAN BIRDS. [PART I. 



feathers of the top of head are rather darker than the edges, though 

 almost inappreciably so, and not imparting a general dusky appear- 

 ance. The chin and throat are white, streaked with ashy brown. 

 The jugulum and breast are pale yellowish buff; the axillars, inner 

 wing coverts and sides of the breast similarly, but rather more de- 

 cidedly colored. The belly and edges of the crissal feathers are 

 white, the hinder parts of the flanks ashy. There is a distinct 

 whitish stripe from the lores over, and a quarter of an inch behind 

 the eye ; the lower eyelid is also white. The tail feathers are 

 worn, but there is an indication of a narrow white tip. The 

 feathers of the jugulum, especially of the sides, are tipped with 

 ashy like the back, as in immature specimens of T. migratorius. 

 The greater wing coverts are tipped with dull white. The bill is 

 yellowish ; the upper mandible and the tip of lower tinged with 

 dusky. The feet are pale brown. 



The length cannot be given accurately, as the skin is much drawn 

 up. The wing, however, measures 5.10 inches, its tip reaching 1.40 

 beyond the longest secondary; tail, 4.10; tarsus, 1.20; middle toe 

 and claw, 1.07 ; exposed portion of culmen, .92 ; from tip to open 

 portion of nostrils, .60. 



The specimen with a general resemblance to an immature T. 

 migratorius (especially the western variety), in the white superciliary 

 streak and general markings, is much lighter beneath than in any of 

 the many skins of T. migratorius before me ; there being none of 

 the dark chestnut or cinnamon shade, but rather a light buff ; the 

 belly and flanks are much more purely white. The superciliary 

 stripe extends farther behind the eye ; indeed in most specimens of 

 migratorius the white is nearly confined to the eyelids. The bill 

 and wings are rather longer than usual in migratorius ; the middle 

 toe, on the other hand, appears shorter. 



The specimen lacks entirely the reddish-brown back of T. Jlavi- 

 rostris, in which latter also the breast and sides are like those of 

 migratorius. The white of the belly is even more extended. It 

 has a whitish superciliary streak, entirely wanting in fiavii'ostris. 

 The upper part of the jugulum is not streaked. The wings arc 

 longer and more pointed, and the primaries extend consideraljly 

 farther beyond the secondaries. The bills are of the same size ; the 

 tarsus is 1.20, or longer than the middle toe and claw ; while in Jlavi- 

 rostris (although a larger bird) the tarsus is only 1.00, and shorter 

 than the middle toe and claw (1.20). 



Upon the whole, it may be that the s])ecinien Ix'fore me represents 

 an abnormal plumage of T. migratorius ; Init its rather different 



