582 Annals of the Carnegie Museum. 



dd. Forehead and malar region black. 



Ceophlceus lineatus scapularis, 9 • 

 cc. Bill black; inner wing-coverts nearly white, only slightly yellowish. 

 d. Forehead and malar region scarlet. 



Ceophlceus lineatus lineatus, $ . 

 dd. Forehead and malar region black. 



Ceophlceus lineatus lineatus, 9 • 

 bb. No buff-ochraceous streak on side of head (begins at end of scarlet). 



c. Whole head and throat scarlet. Campephilus guatemalensis buxans, $ . 

 cc. Forehead and throat black. Campephilus guatemalensis buxans, 9 . 



aa. Size smaller (wing not more than 135 mm.); no elongated scarlet crest. 



b. Back and wings not barred or spotted, uniform black, greenish, or golden- 

 brown. 

 c. Back and wings black; forehead and rump white; throat yellow. 

 d. Whole crown and nape crimson. 



Melanerpes formicivorus striati pectus, $ . 

 dd Whole of crown black. Melanerpes formicivorus striati pectus, 9 • 

 cc. Back and wings green, golden-green or golden-brown. 



d. Size very small (wing 52 mm.); whole crown and nape brownish- 

 black, nape dotted with white. 

 e. Forehead spotted with reddish-yellow. 



Picumnus olivaceus Jlavotinctus , $ . 

 ee. Forehead unspotted. Picumnus olivaceus jlavotinctus, 9 • 



dd. Size medium or larger. 

 e. Underparts barred. 



/. Rump scarlet; back golden-brown; underparts dusky 

 grayish-brown, finely barred with white. 

 g. Crown and nape feathers tipped with crimson. 



Veniliornis neglectus, $ • 

 gg. Crown and nape sooty-black. 



Veniliornis neglectus, 9 • 

 ff. Rump nearly or quite concolorous with back. 



g. Remiges barred with cinnamon-rufous; throat and 

 chest dark olive-green; breast and abdomen 

 greenish-buffy, barred with dark green. 

 h. Crown and malar region crimson. 



Chloronerpes simplex, $ . 

 hh. Crown dull green, only nuchal collar crimson. 



Chloronerpes simplex, 9 • 

 gg. Remiges not barred. 



h. Crown blackish-slate; entire under parts 

 barred; back golden-olive. 

 *. Only nape crimson. 



Chloronerpes yucatanensis, 9 • 



ii. Sides of nape and malar region also crimson. 



Chloronerpes yucatanensis, <?. 



