28 



NORTH AMERICAN BIRDS. 



pale yellowish-bufF; the axillars, inner wing-coverts, and sides of the breast similarly, biit 

 rather more decidedly colored. The belly and edges of the crissal feathers are white, the 

 hinder parts of the flanks ashy. There is a distinct whitish sti-ipe 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 jugu- 

 lum, especiall}' 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 yel- 

 lowish; 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, how- 

 ever, measures 5.10 inches, its tip reaching 1.40 bej'ond 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. 



Hab. Todos Santos, Cape St. Lucas. 



The specimen with a general resemblance to an immature T. migratorivs 

 (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. mi- 

 gratorius examined ; 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 migmturius the wliite is nearly confined to the eyelids. 

 The bill and wings are rather longer than usual in 'migraforiiis ; the middle 

 toe, on the other hand, appears shorter. Nothing is on record in regard to 

 the habits of tliis bird. 



Subgenus HESPEROCICHLA, Baird. 

 Hcsperocichla, Baird, Rev. Am. Birds, I, 1864, 12. (Type Turdus nreviits, G>1.) 



The single species of this subgenus differs in form from the Eobins {Fla- 



nestic'us), in the more awl- 

 shaped bill, the curved com- 

 missure, and the absence of 

 a notch at the end ; the long- 

 er, slenderer, and straighter 

 claws ; and in the dissimi- 

 larity in color of the sexes. 

 In the latter respects it 

 agrees with Mcrida of Eu- 

 rope and Middle America ; 

 in which, however, the bill 

 is distinctly notched, and 

 less attenuated. The tail is 

 shorter and broader than in 



Turdus niTvius. 



Planesticus, more as in true Turdus or Hglockhhi. 



