28 



NORTH AMERICAN BIRDS. 



pale yellowish-buff; the axillars. innor winjr-f'ovorts, and sides of tho breast similarly, but 

 rather more deeidedly oolortMl. The belly and edges of the crissal feathers are white, the 

 hinder parts of the tlanks ashy. There is a distinct whitish stripe from the lores over 

 and a quarter of an inch behind the eye ; the 1ow<m- eyelid is also white. The tail-feathers 

 are worn, but tiiere is an indication of a narrow white tip. The feathers of the jufru- 

 lum, espe«Mally of tlie sides, are tipped with a.shy like the back, as in innnature specimens 

 of T. migratorins. The trreater winjr-coverts are tipped with dtdl white. Tlie 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 .«;kin is much drawn up. The wing, how- 

 ever, 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, .00. 



Hab, Todos Santos, Cape St. Lucas. 



The specimen with a j^eneral resemblance to an immature T. miffratorivs 

 (especially the western variety) in the white siii)erciliary streak and general 

 markings, is much lighter beneath than in any of the many skins of T. mi- 

 yrutoriua 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 strij)e extends farther behind the eye ; indeed, in 

 most specimens of mif/ratorius the white is nearly confined to the eyelids. 

 The bill and wings are mther longer than usual in miyratoriua ; tlie middle 

 toe, on the other hand, a[)pears shorter. Nothing is on record in regard to 

 the habits of tliis bird. 



Subgenus HESFEROCICHLA, Baird. 



Hefijyerna'chhi, 1>.\IR1), Rev. Am. Birds, I, 18(54, 12. (Tyi>«' Tardus mevim, Om.) 



The single species of this subgenus differs in form from the Kobins (Fla- 



Host lens), 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 Meruhi 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 

 Planfsticvs, more as in true Tnnhis or Hi/hciehla. 



