BIRDS OF NORTH AND MIDDLE AMERICA. 927 
ff. Bill decidedly though slightly decurved throughout, relatively more 
slender (depth at nostril not more than one-third the distance from 
nostril to tip of maxilla).............--...------ Picolaptes (p. 257). 
bb. Bill excessively elongated (more than twice as long as tarsus). 
ce. Bill nearly straight, much stouter...........-...-....- Nasica (extralimital).¢ 
cc. Bill strongly arched or decurved, slender.......... Campylorhamphus (p. 268). 
aa. Nostril narrow, distinctly operculate. (Glyphorhynchinz.) 
b. Bill long, slender, and distinctly (though not strongly) arched or decurved, 
conspicuously longer than head (about twice as long as tarsus); nasal oper- 
culum densely feathered; outer toe distinctly (though slightly) shorter than 
middletoe. (Drymornithes.).....-...-.+-0+2--+++- Drymornis (extralimital).? 
bb. Bill shorter than head or at least not distinctly longer, much less than twice as 
long as tarsus, not distinctly, if at all, decurved; nasal operculum naked; 
outer toe as long as middle toe. 
c. Bill much shorter than head, the exposed culmen only about two-thirds as 
long as tarsus; inner webs of remiges crossed by a broad sub-basal band 
of ochraceous-buff. 
d. Bill very stout, wedge-shaped, with tip of maxilla broad and flattened; 
nasaloperculum very broad. (Glyphorhynchez.)..Glyphorhynchus (p. 274). 
dd. Bill slender, almost subulate, with tip of maxilla narrow, pointed, and 
slightly decurved; nasal operculum narrow. (Sittasome.). 
Sittasomus (p. 277). 
ce. Bill nearly as long as head, the exposed culmen as long as (sometimes longer 
than) tarsus; inner webs of remiges without any cross-band, but uniform 
cinnamon-rufous (more or less deep) except terminally. (Dendrocincle.) 
d. Tail as long as or longer than wing, graduated for half its length, the rectrices 
conspicuously acuminate and very strongly decurved subterminally (as 
in Glyphorhynchus and Sittasomus), the attenuated tips distinctly webbed 
throughout; bill more slender, relatively broader and more depressed 
basally siacuueertti vy nie waeinnd dns einige ec Deconychura (p. 283). 
dd. Tail decidedly shorter than wing, graduated for only one-third its length, 
the rectrices inconspicuously acuminate and fot strongly decurved 
terminally or subterminally, the attenuated tips with shaft denuded or 
the barbs very short; bill stouter, relatively narrower and deeper basally. 
Dendrocincla (p. 286). 
Genus DENDROCOLAPTES Hermann. 
Dendrocolaptes HERMANN, Obs. Zool., 1804, 135. (Type, Picus certhia Boddaert.) 
Dendrocalaptes (emendation) Voret, Thierreich, i, 1831, 624. 
Dendrocopus VinttuoT, Analyse, 1816, 45. (Type, Talapiot Buffon=Picus certhia 
Boddaert.) 
Dendrocops Swainson, Classif. Birds, ii, 1837, 314. (Type, Dendrocolaptes platy- 
rostris Spix=Dendrocolaptes picumnus Lichtenstein.) 
Orthocolaptes Lzsson, Rev. Zool., 1840, 267. (Type, O. communis Lesson= 
Dendrocolaptes picumnus Lichtenstein.) 
Premnocopus¢ CaBANIS, in Wiegmann’s Archiv fiir Naturg., xiii, pt. i, 1847, 339. 
(Type, Picus certhia Boddaert.) 
@ Nasica Lesson, Traité d’Orn., 1831, 311. Type, N. nasalis Lesson=Dendrocopus 
longirostris Vieillot. (Guianas and Amazon Valley; monotypic.) 
b Drymornis Eyton, in Jardine’s Contr. Orn., 1852, 23. Type, Nasica bridgesii 
Eyton. (Uruguay and northern Argentina; Bolivia?; monotypic.) 
¢ “noéuvov, Stamm; xéxtw, hacken.”’ (Cabanis.) 
