Mexico^ Central America^ and South Amej'ica. 9 



The female differs in having grayish-white on the front, sides of the 

 head, throat and breast, in place of the yellow of the male ; the abdo- 

 men is creamy- white, with a slight tinge of yellow on the lower part ; 

 under tail coverts very pale yellow ; under wing coverts light yellow. 



Habitat. Mazatlan, Mexico. Collected by Col. A. J. Gray- 

 son. Types in Museum of Smithsonian Institute, ^ No. 58231 ; 

 ? No. 58232. 



Rem,arhs. Three specimens are in Col. Grayson's collection, 

 two marked A. sdateri and one A. citreopyg'ms^ but I think it 

 a very distinct species from both ; its affinities are with A. cit- 

 reopygius^ from which it differs in its upper plumage being not at 

 all tinged with brown, the light marking on the rump apparently 

 more restricted, the yellow coloring below clearer and brighter, 

 without any brown on the sides of the breast, and the under 

 wing coverts yellow — not light cinnamon as in that species ; 

 the tail is lighter in color, not inclining to brown ; the feathers 

 overlying the pleura are brighter in color and more elongated ; 

 it is larger than A. citreojyygius, the tail being half an inch 

 more in length than that of the other ; the bill is more slender, 

 with the hook conspicuously longer, and much lighter in color. 

 A. sdateri has not been found, I think, north of Costa Eica; 

 it may be distinguished by tlie olive-green which prevails in its 

 upper plumage, also on the neck and breast. 



8. ToclirostriioM §tiperciliafl*i§. 



Crown and hind neck dark grayish-plumbeous, the front blackish ; 

 a white stripe extends from over the eye quite forward on the bill ; 

 lores blackish ; back and rump bright olive-green ; tail black, mar- 

 gined with olive-green ; wing coverts black, the ends broadly marked 

 with bright yellow ; quills brownish-black, edged with bright yellow ; 

 under wing coverts yellow ; the under-plumage is peai'ly-white, with 

 the upper part of the breast light plumbeous ; a wash of j^ale yellow on 

 the lower part of the abdomen and under tail coverts ; sides under the 

 wings light olive-gi-een ; bill black, whitish at the end ; tarsi and toes 

 pale brown. 



Length 3| in. ; wing 2 ; tail If; tarsi f ; bill ^. 



