7. Bill _tyrannine_. Tail broad, equal to or longer than the wing, and much rounded. Setophageæ. Colors mainly black, red, and white. Tail not longer than the wing. Above black, wing variegated … _Setophaga._ Tail longer than the wing. Above plumbeous, wing unvariegated … _Myioborus._ 8. Bill _sylvicoline_. Tail narrow, almost even; shorter than the wing. Myiodiocteæ. Colors yellow beneath, olive-green or ashy above. Black markings about the head in the ♂ … _Myiodioctes._ 9. Bill somewhat _parine_. Tail equal to the wing, almost even. Cardellineæ. Colors mainly red, or red, ashy, and white. Bill weak, almost cylindrical; wings rounded, the quills broad and soft at ends. Tail slightly rounded, the feathers soft. Colors mainly red … _Ergaticus._ Bill stout, the culmen and gonys very convex; wings pointed, the quills emarginated and hard at ends. Tail even, the feathers hard. Color ashy above; rump and beneath white. Head red and black … _Cardellina._ Of the above, _Granatellus_, _Myioborus_, _Ergaticus_, and _Cardellina_ belong to Central and South America, _Teretristis_ to Cuba. SUBFAMILY SYLVICOLINÆ. SECTION MNIOTILTEÆ. CHAR. Bill slightly notched some distance from the tip. Rictal bristles minute. Hind toe considerably developed, longer than the lateral toe; its claw decidedly longer than its digit. First quill nearly or quite as long as the second. Wings long, pointed; much longer than the tail, which is nearly even. Tail-feathers with white spots. Bill much compressed for terminal half, the commissure and lateral outlines decidedly concave; the culmen and gonys convex. GENUS MNIOTILTA, VIEILLOT. _Mniotilta_, VIEILLOT, Analyse, 1816, 45. (Type, _Motacilla varia_, L.) GEN. CHAR. General form sylvicoline; bill rather long, compressed, shorter than the head, with very short rictal bristles and a shallow notch. Wings considerably longer than the tail, which is slightly rounded; first quill shorter than second and third. Tarsi rather short; toes long, middle one equal to the tarsus; hind toe nearly as long, the claw considerably shorter than its digit. Color white, streaked with black. Nest on ground; eggs white, blotched with red. This genus differs from other Sylvicolines in the elongation of the toes, especially the hinder one, by means of which the species is enabled to move up and down the trunks of trees, like the true Creepers. But one species is recognized as North American, although Nuttall describes a second. Mniotilta varia, VIEILL. BLACK AND WHITE CREEPING WARBLER.