Page:Birds of North and Middle America partV Ridgway.djvu/42

14 grayish white; under parts without black, except sometimes a jugular area Herpsilochmus (extralimital).
 * hh. Rectrices 10

Drymophila (extralimital).
 * ee. Planta tarsi entire (fused).
 * f. Bill decidedly longer than head, more than one-third as long as wing.
 * g. Tail four-fifths as long as wing, graduated; exposed culmen longer than tarsus, the latter much less than half as long as wing.

Ramphocænus (p. 84).
 * gg. Tail but little more than half as long as wing, rounded; exposed culmen much shorter than tarsus, the latter nearly half as long as wing

Microbates (p. 88).
 * ff. Bill not longer than head (usually shorter), less than one-third as long as wing.
 * g. Rictal bristles well developed.
 * h. Rectrices 10; bill much narrower and relatively deeper at base; tarsus longer than commissure

Cercomacra (p. 90).
 * hh. Rectrices 12; bill much broader and more depressed at base; tarsus shorter than commissure

Thamnomanes (extrahmital).
 * gg. Rictal bristles indistinct (usually obsolete).
 * h. Loral and frontal regions very densely feathered, the feathering erect, plush-like

Pyriglena (extrahmital).
 * hh. Loral and frontal regions normally feathered, scantily feathered, or sometimes naked.
 * i. Frontal and loral regions normally (densely) feathered.
 * j. Rictal region naked, postocular region wholly feathered; larger forms (total length about 125 mm.), with mostly plain coloration

Myrmobonis (extrahmital).