482 NORTH AMERICAN BIRDS. 



f\ 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^. Tail even or emarginate, usually very much shorter 



than wing (the difference usually exceeding length 



of tarsus)'^ Dendroica. (Page 492.) 



g^. 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^. Lower parts whitish, conspicuously streaked with 



grayish brown or dusky, above plain brown 



or dusky, the head sometimes striped. 



Seiurus. (Page 518.) 



h^. Lower parts yellow or buffy, sometimes ashy, or 



mixed ashy and black, anteriorly ; above plain 



olive, olive-green, or grayish. 



{}. Bill straight ; above olive or olive-green, the 



bead sometimes grayish. 



Geothlypis. (Page 520.) 

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

 yellowish olive-green in one species). 



Teretistris} 



p. 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^. "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 Granatelhis.^ 



1 The single exception is " GeothJijpis" poliocephala Baird. 



2 Notable exceptions to the last character are D. domuiica (Linn.) and D. pabnannn (Gmel.), one or both 

 of which should in strictness be removed from Dendroica. 



3 Teretistris Cab., J. f. 0. iii. 1855, 475. Type, Anahates fernandinx Lemb. (Only two species known, 

 both peculiar to Cuba.) 



* Granatellua " Dv Bus, Esq. Orn. (1850?) sub tab. 24." Type, G. venustua Du Bus. 



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

 Tehuantepec, etc. ; (2) G.francesae Baird, from Tres Marias ; (3) G. sallxi (Bonap.), from Cordova, etc. ; and 

 (4) G. boucardi Ridgw., from Yucatan. A fifth species, G. pelzelni Scl., is found in the Amazon Valley. 



