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100 



IIKVIKW or AMKKU'AN lilltDS. 



[I'AIIT I. 



which one unucqiiainted with the Biibject can readily detcrmiuc the 

 gruup to which a species or gcuus luuy buioug. 







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Bill conical ; its hriitle» very short, or wanting, 



Sylvlcolinee. Bill conical, or about as high as wide, or even 

 higher, oppcmite the nosilrila. Qape with short bristles, not 

 reaching beyond the nostrils or none. Tip of bill not hooked ; 

 with or without a faint notch ; coiumissure nearly straight. . 

 Wings long and pointed ; considerably longer than the 

 narrow, nearly even tail. Legs short and weak ; tarsi uot 

 as long as the head (except in MniotiUa). 



Bas{^l Joint of inner toe adherent for its basal half; basal 

 Joint of outer toe, and part of the next, adherent (in all 

 other SyU'icdlidii' the inner toe cleft nearly to the base, 

 and second joint of outer toe free). Hind toe lengthened, 

 nearly equal to the middle ; the digit considerably longer 

 than the claw. Creeping Warblers. Oenera : MniotiUa, 

 Parula Mniotiltta 



Hind toe but little, if any, longer than the lateral ; Uie 

 digit about equal to the claw. 



Bill entirely without notch, except Protonotariua ; 

 no rictal bristles. Swamp WarhUrg. Genera : /Vo- 

 tonotariuSf IJelminthophagn, Ilelmitherua . . Vermivoreie. 



Bill notched. Rictus with distinct bristles, reaching 

 nearly to the nontrils. IVoud Warblers. Qenera : 

 Perissoglossa, Dendroica ..... SylvicolM;. 



Oeothlyplnsa. Bill much as in Sylvicolince ; with distinct notch ; 

 slendor, or stout, the cu'.men gently curved ; the commis- 

 sure nearly straight. Legs much developed ; tarsi longer 

 than the skull. Bristles of rictus short, but appreciable. 

 Ground Warblers. 

 Wings pointed ; longer than the nearly even tail. Qenera : 



Seiurua, Oporornis ....... Seuirece. 



Wing9 much rounded ; shorter than the graduated tail. 



Genus : Geothlypis Geothlypece. 



Icterianas. Bill without notch, or riotal bristles. CulmeQ and 

 commissure mucli curved. Wings much rounded ; shorter 

 than the tail. 



Bill very high. Tail graduated. Outer toe deeply cleft. 



Genera : Icteria, Granatellua ...... Icteritae, 



Bill slender. Tail nearly even. Outer toe adherent for 

 basal half. Genus : Teretristia Teretriatws, 



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