BIRDS OF NORTH AND MIDDLE AMERICA. 229 



Range. — Southern Mexico to Cayenne, southeastern Brazil, Bohvia, 

 and Ecuador. (About twelve species.") 



KEY TO THE SPECIES AND SUBSPECIES OF DENDROCOLAPTES. 



a. Pileum barred or transversely lunulated with black. {Dendrocolaptes sancti- 

 thomiw) 

 h. Pileum distinctly more rufescent or tawny than color of back; back more broadly 

 or more distinctly barred; bars on under parts broader. (Southeastern Mexico 



to western Panama.) Dendrocolaptes sancti-thomse sancti-thomae (p. 229). 



hh. Pileum nearly (sometimes quite) concolor with back; back more narrowly or 

 less distinctly barred; bars on under parts narrower. (Southwestern Costa 

 Rica and adjacent part of western Panamd.) 



Dendrocolaptes sancti-thomae hesperiiis (p. 232). 

 aa. Pileum streaked with buffy or whitish. 



h. Pileum blackish, with narrow (and indistinct?) buffy streaks; chest with pale 

 buffy or whitish predominating (the mesial streaks broader). (Guatemala.) 



Dendrocolaptes puncticollis (p. 232 &). 



hh. Pileum grayish brown, with broader and more distinct streaks; chest with 



bro'ftTi predominating, the buffy mesial streaks narrower. {Dendrocolaptes 



validiis.) 



c. Chest more distinctly and regularly streaked; under parts less extensively 



barred. (Colombia, etc.).. .Dendrocolaptes validus validus? (extralimital).*" 



cc. Chest less distinctly or more irregularly streaked (the streaks broken along 



edges by black dots or bars) and under parts more extensively streaked. 



(Costa Rica and Panama; Nicaragua?; northwestern Colombia?). 



Dendrocolaptes validus costaricensis (p. 2.33j. 



DENDROCOLAPTES SANCTI-THOM.S SANCTI-THOMiE (Lafresnaye). 



BARRED WOODHEWER. 



Adults (sexes alilte). — Pileum and hindneck dull cinnamon-rufous 

 or russet marked with crescentic bars or lunules of black; back, 

 scapulars, and smaller (lesser and middle) wing-coverts olive-brown 

 (nearly raw-umber to mars brown), barred, more or less distinct!}^, 

 with black; rump, upper tail-coverts, tail, and proximal secondaries 

 deep cinnamon-rufous or chestnut (the tail usually darker, more 

 chestnut, than other parts), the shafts of rectrices darker; primaries 

 and distal secondaries deep cinnamon-rufous e(lo;ed, more or less 

 broadly, with grayish brown or olive, the inner webs of longer prima- 



" Of these the following have been examined in this connection: D. picumnus 

 Lichtenstein, D. validus Tschudi, D. certhia (Boddaert), D. obsoleius Ridgway, D. 

 nidiolatus Sclater and Salvin, and D. sancti-thomx (Lafresnaye). 



&I have not seen a specimen of this form, and, as stated on \). 233, the ijublished 

 descriptions do not clearly indicate the differences from D. validus. 



<: Dendrocolaptes validus Tschudi, Fauna Peruana, Aves, 1845, 242, pi. 21, fig. 2 

 (Peru); Sclater, Cat. Birds Brit. Mus., xv, 1890, 172, part. — Dendrocolaptes multistri- 

 gatms Eyton, Jardine's Contr. Om., 1851, 75 (locality not indicated; coll. Derby Mus.). 



I have not seen a Peruvian specimen of this species, and am therefore not at all sure 

 that the Colombian specimens (chiefly from the Santa Marta district), wdth which I 

 have compared Costa Rican examples, are subspecifically the same. 



