588 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



tinct dusky shaft-streaks; back and scapulars with the barring 

 coarser and more irregular, the latter sometimes with a few very 

 irregular blotches of brownish black; lesser wing-coverts rather 

 broadly but irregularly barred with blackish and russet, in varying 

 relative proportion, sometimes uniform dusky on the anterior por- 

 tion; remiges (except proximal secondaries) dull brownish black to 

 dull brownish slate-blackish, crossed by narrow broken bands of 

 light grayish, these assuming the form of distinct spots on outer webs 

 of primaries, the corresponding markings on inner webs broken by 

 dusky marbUng, the terminal portion of the primaries with uniform 

 light silvery gray interspaces separating broad transverse areas of 

 the same, broken by marblings of blackish and often encircled by a 

 broken narrow area of the same; rectrices irregularly marbled with 

 pale gray, grayish white, and dusky (the first two predominating), 

 sometimes suffused or intermixed with buffy or pale rusty, the heavier 

 dusky markings disposed in the form of more or less distinct trans- 

 verse, much broken, bands; chin and throat mth sparse, irregular, 

 sometimes indistinct, narrow broken bars of dusky; chest more 

 broadly and regularly barred, or coarsely vermiculated with dusky, 

 the breast similarly marked but with a greater or less number of 

 irregular black spots or blotches, of variable size; remaining under 

 parts irregularly and rather sparsely marked with zigzag bars and 

 marblings of dusky, the under tail-coverts sometimes nearly immacu- 

 late; under wing-coverts slate color, more or less broadly barred or 

 transversely spotted with grayish white, sometimes suffused \Ndth 

 buffy or pale rusty; bill and feet brownish (in dried skins). 



Adult male. — Length (skin), about 500; wing, 368; tail, 260; 

 exposed culmen, 33; tarsus, 15.5; middle toe, 30. ** 



Adult female. — Length (skin), 500; wing, 365; taU, 257; exposed 

 culmen, 35.5; tarsus, 16; middle toe, 30.^ 



Panama (Lion Hill; Punta de Sabana) and southward through 

 Colombia (lower Rio Magdalena), Venezuela (San Cristobal), the 

 Guianas, eastern Ecuador (Sarayacu), and Peru (upper Rio UcayaU) 

 to southern Brazil (Sao Paulo, Cantogallo, and Novo Friborgo, Sao 

 Paulo; Para; Rio Belmonte; Amapa; Obidos; Teffe). 



a One specimen from Para, Brazil. 



b One specimen from lower Rio Magdalena, Colombia. 



