22 BULLETIN 50, UNITED STATES NATIONAL MUSEUM 



all faintly but distinctly bent downward terminally (the upper surface 

 slightly convex, the under side slightly concave). Tarsus moderately long 

 and stout (about one-fourth as long as wing), the acrotarsium with a 

 single continuous row of broad, transverse scutella, the planta tarsi with 

 small irregular scutella, then large and more or less hexagonal, on 

 upper and lower portion, tending to arrangement in double longitudinal 

 series; middle toe about three-fourths as long as tarsus, the outer toe 

 reaching to a little beyond penultimate articulation of middle toe, the 

 inner slightly to decidedly shorter ; hallux shorter than first two phalanges 

 of outer toe; claws rather long and strongly curved, moderately com- 

 pressed ; a well-developed web between basal phalanges of anterior toe. 



Plimmge and coloration. — Entire loral and orbital regions (extensively) 

 completely nude, the throat also nude but with scattered hairlike feathers, 

 the chin and upper throat more or less feathered ; feathers of pileum 

 elongated, but broad and flattened, forming when erected a bushy crest : 

 plumage in general moderately firm, the feathers, even on neck, distinctly 

 outlined, except on abdomen and under tail coverts, where soft and 

 semidecomposed. Upperparts plain brownish, olivaceous, dull olive- 

 greenish, or dusky dull bluish green, the pileum sometimes black, white 

 with dusky shaft streaks, or with white edges to feathers, one species 

 with eight outer primaries white with dusky tip and base, one with wing 

 coverts, back, etc., edged with white, and one with tail tipped with 

 cinnamon-rufous ; under parts brownish, usually with feathers of chest 

 or breast edged with white, the abdomen, etc., sometimes cinnamon-rufous 

 or chestnut. Sexes alike in color. 



Range. — Southern Mexico to southern Brazil, Bolivia, and Peru. 

 (About 11 species, only one of which occurs in the area dealt with in 

 this work.)^^ 



KEY TO THE NORTH AND MIDDLE AMERICAN FORMS OF THE GENUS PENELOPE 



a. Lower abdomen, under tail coverts, and lower back dull dark brown, not chest- 

 nut Penelope purpurascens purpurascens (p. 23) 



aa. Lower abdomen, under tail coverts, and lower back chestnut. 

 b. Inner remiges coppery auburn, not bronze-green. 



Penelope purpurascens perspicax (extralimital)^ 



" The above description, so far as proportions are concerned, is based essentially 

 on P. purpurascens and P. montagnii, other species not being available at the time 

 of w^riting. P. montagnii diflfers from P. purpurascens in greater extent of feather- 

 ing of chin, which extends over much of the throat, relatively longer primaries or 

 shorter secondaries, much greater restriction of nude circumorbital and loral area, 

 and some other characters, but it is doubtful that the genus Stcgnolaema Sclater 

 and Salvin, of which it is the type, should be granted recognition. 



^ Penelope purpurascens perspicax Bangs. — Penelope perspicax Bangs, Proc. Biol. 

 Soc. Washington, xxiv, 1911, 187 (San Luis, Bitaco Valley, w. Colombia; crit. ; 

 E. A. and O. Bangs coll., now in Mus. Comp. Zool.). — Chapman, Bull. Amer. Mus. 

 Nat. Hist., xxxvi, 1917, 195 (San Antonio, Miraflores, Salento, Colombia). — Bangs, 



