482 NORTH AMERICAN BIRDS. 



f l . Bill slender, its greatest depth less than half the distance 

 from nostril to tip, or else * width at base much greater 

 than its depth, and tarsus with whole of outer side 

 very distinctly scutellate. 



g l . Tail even or emarginate, usually very much shorter 

 than wing (the difference usually exceeding length 



of tarsus) 2 Dendroica. (Page 492.) 



g 1 . Tail more or less rounded or graduated (or else with 

 basal two-thirds hidden by coverts), never very 

 much shorter than wing (sometimes longer), the 

 difference never exceeding length of tarsus. 

 h l . Lower parts whitish, conspicuously streaked with 

 grayish brown or dusky, above plain brown 

 or dusky, the head sometimes striped. 



Seiurus. (Page 518.) 



A*. Lower parts yellow or buffy, sometimes ashy, or 

 mixed ashy and black, anteriorly ; above plain 

 olive, olive-green, or grayish. 

 i 1 . Bill straight ; above olive or olive-green, the 

 head sometimes grayish. 



Geothlypis. (Page 520.) 

 i*. Bill decidedly curved ; above gray (the head 

 yellowish olive-green in one species). 



Teretistris.' 



/*. Bill stout but much compressed, its greatest depth not less 

 than half its length from nostril to tip ; width at base 

 not greater than depth ; outer side of tarsus smooth 

 or " booted" for upper half, at least. 

 g l . Wing 2.90, or more; above, including tail, olive or 

 olive-green; beneath yellow for anterior, white 

 for posterior, half; no white on tail-feathers. 



Icteria. (Page 526.) 



g*. "Wing less than 2.75 ; above plumbeous, the tail black, 

 with much white on outer feathers ; beneath red 

 and white in males, whitish or buffy, tinged with 

 red, in females Granatellus.* 



1 The single exception is " Oeothlypit" poliocephala BAIRD. 



* Notable exceptions to the last character are D. dominica (LiNN.) and D. palmarum (GMEL.), one or both 

 of which should in strictness be removed from Dendroica. 



* Teretitri CAB., J. f. 0. iii. 1855, 475. Type, Anabates fernandinx LEHB. (Only two species known, 

 both peculiar to Cuba.) 



* Granatdlun " Du Bus, Esq. Orn. (1850?) sub tab. 24." Type, 0. venuttut Du Ens. 



Four very beautiful species of this genus occur in Mexico, as follows : (1) 0. venustus Du Bus, in Colima, 

 Tehuantepec, etc. ; (2) O.francetcie BAIRD, from Tres Marias ; (3) 0. aallsei (BoNAP.), from Cordova, etc. ; and 

 (4) 0. boucardi RIDOW., from Yucatan. A fifth species, G. pelzelni SCL., is found in the Amazon Valley. 



