286 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Southwestern Costa Rica (Pozo Azul de Pin is; Pozo del Pit&l, 

 Rio Naianjo; El Pozo de Terraba; Tuis; Palmiir; El General) and 

 Panama (Lion Hill; Divala, Chiriqiii). 



Deconychura typica Cherrie, Proc. U. S. Nat. Mus., xiv, no. 855, Sept. 4, 1891, 339 

 (Pozo Aziil de Pirn's, s. w. Costa Rica; coll. U. S. Nat. Mus.); Expl. Zool. 

 Merid. Costa Rica, 1893, 39 (Palmilr, 8. w. Costa Rica); Anal. Inst. Fis.- 

 Geog. Costa Rica, vi, 1893, 17 (Pozo del FMl, s. w. Costa Rica; descr. nest 

 and eggs).— Bangs, Auk, xviii, 1901, 367 (Divala, Chiriquf, Panamd).— Car- 

 RiKER, Ann. Carnegie Mus., vi, 1910, G52 (s. w. Costa Rica, up to 1,000 ft.). 

 [Deconychura] typica Sharpe, Hand-list, iii, 1901, 77 (Costa Rica; Panama). 

 D[econychura] typica Hellmayr, Novit. Zool., xiv, 1907, 368 (Chiriquf; Pozo 

 Azul, Costa Rica; diagnosis). 



Genus DENDROCINCLA Gray. 



Dryocopus (not of Boie, 1826) Maximilian, Beitr. Naturg. Bras., iii, pt. ii, 1831, 



1111. (Type, Dendrocolaptes turdinus Lichtenstein.) 

 Dendrocincla Gray, List Gen. Birds, 1840, 23. (Type, Dendrocolaptes turdinus 



Lichtenstein.) ' 



Dendromancs Sclater, Proc. Zool. Soc. Lond., 1859, 382. {Type, Dendrocincla 



anabatina Sclater.) 



Medium-sized to rather large DendrocolaptidsB (length about 

 175-235 mm.), with narrow, conspicuously operculate nostril, bill as 

 long as or longer than head, with distinctly recurved (almost uncinate) 

 tip, and with tail shorter than wing, graduated for about one-third its 

 length, the tips of rectrices inconspicuously acuminate and with the 

 nearly denuded projecting tips of the very rigid shafts but slightly 

 decurved. 



Bill about as long as, sometimes shghtly shorter than, head, rather 

 stout, nearly straight (but distinctly decurved, almost uncinate, at tip), 

 its width at latero-frontal antise equal to or greater than its depth at 

 same point, and contained from less than two and a half to a little 

 more than three times in the distance from nostril to tip of maxilla; 

 culmen more or less distinctly ridged, straight for most of its length, 

 rather abruptly decurved terminally, the tip of maxilla almost 

 uncinate; maxillary tomium straight for the most part, rather 

 strongly concave (decurved) terminally, without trace of notch; 

 gonys more or less strongly convex and prominent basally, straight 

 and ascending terminally, the extreme tij) sometimes slightly 

 decurved. Nostril exposed, posteriorly in contact with feathering 

 of latero-frontal antia>, narrow (slit-like), longitudinal, overhung by 

 a broad membranous operculum, this sometimes partly covered by 

 feathers of the latero-frontal antij3e. Rictal bristles present but very 

 small, and feathers of chin and lores with fine terminal setoe. Wing 

 moderate to rather long, rather pointed, the longest primaries exceed- 

 ing secondaries by from less the distance from nostril to tip of maxilla 

 to nearly length of exposed culmen ; sixth, seventh, and eighth, or sixth 

 and seventh, primaries longest, the tenth (outermost) a Uttle more 



