372 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



rusty on the fore part, and more olivaceous on the rump and upper tail- 

 coverts; upper head and neck gray, the latter slightly washed with 

 olivaceous, the forehead scarcely lighter. Eound the eye a pure white 

 ring; chin, a stripe from the nostrils to above the eye, and another from 

 the base of the lower mandible, between the black of the lores and line 

 bordering the chin to below the eye dull whitish, fading out gradually 

 into the gray of the sides of the head and the throat. The Hanks are 

 strongly suffused with olivaceous, the remaining under parts very 

 slightly so, the middle of the belly and the edges of the under tail- 

 coverts becoming dull white. Wiug feathers brownish black, edged 

 with bright rusty on the outer web; the concealed base and edge of the 

 inner web of secondaries and inner primaries light buft', forming two 

 large patches on the under side of the wing. Tail-feathers black, ex- 

 cept the middle pair, which are gray, tinged with olive, especially on the 

 outer web; the exterior pair has the outer web and the apical half of 

 the inner one light grayish buif, the edge of the light-colored part and 

 the tip being white; the next pair has only a wedge-shaped and similar 

 colored patch towards the tip; the third pair with a narrow tip of white. 

 Feet brown ; bill brownish black. 



List of specimens examined, and their dimensions. 



Wing formula. 



Hah.— High table-land of Southern Mexico and Guatemala. 

 Myadestes obscueus var. occidentalis Stejneger. 



Myiadestes obscums Lafr. apud Baikd, Rev. Amer. Birds, i, p. 430 (part). 

 . Descr.— (?7. ;S'. Nat. Bins. No. 35038.— <? ad. Tonila, Jalisco, October, 

 1863. John Xantus.) Light slate-gray, only the interscapulars. 



