406 BULLETIN 50^ UNITED STATES NATIONAL MUSEUM. 



Bill very short and relatively thick (less than half as long- as head, its 

 width at frontal antia> equal to more than two-thirds the distance 

 from nostril to tip of maxilla and not conspicuously greater than its 

 depth at same point) ; exposed culmen not longer than outer (some- 

 times shorter than inner) toe without claw, distinctly ridged, grad- 

 ually and slightly decurved terminally, with tip of maxilla indistinctly 

 uncinate; gonys longer than mandibular rami, straight or very faintly 

 convex, ascending terminally; maxillarj' tomium faintly sinuated^ 

 distinctly but minutely notched subterminally. Nostril in anterior 

 end of nasal fossa?, longitudinally oval, margined above (at least 

 posteriorly) by narrow membrane. Rictal bristles rather small and 

 few in number, but feathers of chin and frontal antise with distinct 

 bristly points, the latter extending much beyond nostrils. Wing 

 moderate, rather pointed, the longest primaries exceeding second- 

 aries by about length of exposed culmen, or less; seventh, eighth, 

 seventh and eighth or eighth and ninth primaries longest, the tenth 

 (outermost) equal to fourth or fifth. Tail more than three-fourths as 

 long as wing (T. ixii'vus) to very nearly as long (T. plujnbeiceps) , even, 

 slightly rounded or double-rounded or slightly emarginate, the rec- 

 trices rather narrow basally but widening terminally. Tarsus one- 

 fourth {T. plunibeice'ps) to nearly (sometimes quite) one-third as long 

 as wing, its scutella distinct, typically exaspidean; middle toe without 

 claw, more than half as long as tarsus, its basal phalanx united for 

 less than entire length to outer toe, for about half its length to inner 

 toe; outer toe, without claw, reaching to about middle of subtermi- 

 nal ]^halanx of middle toe, the inner not distinctly shorter; hallux 

 about as long as inner toe, stouter, its claw shorter than the digit; all 

 the claws moderately curved, sharp, compressed. 



Coloration. — Above plain olive or olive-green, the pileum sometimes 

 gray or dusky, the wings dusky with olive-yellowish edgings and some- 

 times with pale yellowish tips to middle and greater coverts; beneath 

 dull whitish or grayish white tinged posteriorly with pale yellow, or 

 mostly light yellowish or yellowish olive ; sometimes with a whitish or 

 yellowish superciliary streak. 



Range. — Guatemala to southern Peru, Bolivia, and Guiana. 

 (About twelve species.) " 



I am inclined to agree with Count von Berlepsch that Pogono- 

 triccus flmnheiceps Lawrence'' is a member of this genus, since, while 



« Of which some (not seen by me) may be not really congeneric. 



6 Pogonotiicais plum.beice2JS Lawrence, Ann. Lye. N. H. N. Y., ix, 1869, 267 (Bogota, 

 Colombia; coll. U. S. Nat. Mus.); Sclater, Cat. Birds Brit. Mus., xiv, 1888, 99.— Tyrannis- 

 cus plumbeiceps Berlepsch andTaczanowski, Proc. Zool. Soc. Lond., 1885, 90 (Machay, 

 Ecuador); Berlepsch and Stolzman, Proc. Zool. Soc. Lond., 1896, 363 (La Gloria and 

 Garita del Sol, Peru). 



