BIRDS OF NORTH AND MIDDLE AMERICA. 227 



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). 



66. Bill excessively elongated (more than twice as long as tarsus). 



e. Bill nearly straight, much stouter Nasica (exiralimital ).« 



cc. Bill strongly arched or decurved, slender Campylorhamphus (p. 268). 



aa. Nostril narrow, distinctly operculate. {Glyphorhynchimv .) 



6. 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 



middle toe. {Drymornithes. ) Drymornis (extralimital ) . '* 



66. 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; 

 nasal operculum very broad. {Ghjphorhiinchex.)..Qr\Y^\\othya.c'h.vis (p. 274). 

 dd. Bill slender, almost subulate, with tip of maxilla narrow, pointed, and 

 slightly decurved; nasal operculum narrow. {Sittasoms-.). 



Sittasomus (p. 277). 



cc. 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. {Dendrocinclse.) 



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 Glyphorhi/nchus and Sittasomus), the attenuated tips distinctly webbed 



throughout; bill more slender, relatively broader and more depressed 



basally Deconychura (p. 283). 



dd. Tail decidedly shorter than wing, graduated for only one-third its length, 

 the rectrices inconspicuously acuminate and not 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, Picas ccrthia Boddaert.) 



Dendrocalaptes (emendation) Voigt, Thierreich, i, 1831, 624. 



Dendrocopus Vieillot, Analyse, 1816,45. (Type, TaJajyiot Buflon=Picus ccrthia 



Boddaert.) 

 Dcndrocops Swainson, Classif. Birds, ii, 1837, 314. (Type, Dendwcolaptis platy- 



rostris Si)ix= Dendrocolaptes picuinnus Lichtenstein.) 

 Orthocolaptes Lesson, Rev. Zool., 1840, 267. (Type, 0. communis Less(in = 



Dendrocolaptes picumnus Lichtenstein.) 

 Premnocopus c Cabanis, in Wiegmann's Archiv fiir Naturg., xiii, pt. i, 1847, 339. 



(Type, Picus certhia Boddaert.) 



"■ Nasica Lesson, Traite d'Orn., 1831, 311. Type, N. nasalis Lesf^on = De ndroco pus 

 longirostr is YieiWot. (Guianas and Amazon Valley; monotypic.) 



b Drymornis Eyton, in Jardine's Contr. Orn., 1852, 23. Type, Nasica hridgesii 

 Eyton. (Uruguay and northern Argentina; Bolivia?; monotypic.) 



c "^Tjoljuvov, Stamm; kotztoj, hacken." (Cabanis.) 



