Descriptions of New Species of Birds. 133 



Habitat. — Costa Rica, Angostura. Collected by J. Carmiol. 

 Mus. Smith. Inst. 



Remarks. — Allied to 3f. exsul, Scl., and M. Io3?nosticta, Salv. 

 (P. Z. S., 1864, p. 582) ; it differs from the former in having a 

 white concealed dorsal patch, in the middle as well as the 

 smaller wing coverts being black, and the spots on them larger 

 and more conspicuous ; the bill is much narrower than that of 

 exsul • from losmosticta it differs in the throat being unspotted, 

 the shoulders white, and the middle wing coverts black ; it is 

 also larger. 



M. losmosticta differs from all its affines in having the throat 

 spotted with white, and in its shoulders being black. 



Fam. TYRANNID^E. 

 10. Empidonax flavescens, nov. sp. 



Male. Plumage above greenish yellow, the crown darker, and of a 

 brownish cast ; tail umber brown, edged with the same color as the 

 back ; smaller wing coverts colored like the back, the others umber 

 brown, margined at their ends with light fulvous, forming two bars 

 across the wing ; quills umber brown, narrowly edged with greenish 

 yellow ; under plumage bright yellow, the breast deeper in color and of 

 a fulvous shade ; the chin greyish ; under wing coverts pale yellow ; 

 inner margins of quills of a light salmon color ; upper mandible black, 

 the under creamy white ; feet light brown. 



Length 5|- inches ; wing 2f ; tail 2£ ; bill § ; tarsi f. 



Habitat. — Costa Rica, Barranca. Collected by J. Carmiol, 

 April, 1864. Mus. Smith. Inst. 



Another specimen, collected Nov. 30th (sex not marked), 

 has the quill and tail feathers of a darker brown, the crown 

 darker and richer in color, and the fulvous on the breast and 

 wing coverts deeper and brighter. 



This is not much like any other species of the genus. 



