1887.1 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 519 



(lie of breast and belly dull buffy wbitisli; wiug and tarsus shorter; tail 

 longer (?). 

 Habitat. — Lower Amazon (Diamantina Mountains.) 

 Adult (Diamantina Mountains, July 15, 1S87; C. B. Eiker): General 

 color of upper parts light bister-brown, tinged with grayish across hind- 

 neck, and brightening into mummy-brown on upper tail-coverts, tail, and 

 secondaries, the latter broadly and distinctly barred with black, the 

 primaries similarly but less distinctly marked; greater wing-coverts 

 narrowly and indistinctly barred with dusky ; rectrices more distinctly 

 barred, especially toward tips. Forehead and fore part of crown (down 

 to eyes) rusty chestnut, brightening into tawny-rufous on upper portion 

 of lores ; a conspicuous narrow stripe of dull white along each side of 

 occiput and nape; upper portion of auriculars dusky, forming an indis- 

 tinct short stripe, extending anteriorly beneath lower eyelid ; rest of 

 auriculars dull light grayish, very indistinctly streaked with darker; 

 sides of neck plain dull grayish, this color extending over sides of breast. 

 Malar region, chin, throat, and upper j)art of chest plain tawny-cinna- 

 mon; median portion of lower chest, breast, and abdomen pale dull 

 buffy, more grayish beneath the surface ; sides dull brownish gray, 

 tinged with olive, passing into tawny-brownish on flanks, the under tail- 

 coverts brighter, more cinnamon-tawny. Bill blackish, lower half of 

 lower mandible whitish ; legs and feet dark horn-color. Length (skin) 

 4.50 ; wing 2.50, tail 1.60, exposed culmen .60, bill from nostril .42, tar- 

 sus .90. 



An adult female, same date and locality', differs in no appreciable re- 

 spect as regards coloration, its measurements being as follows : Length 

 (skin) 4.60; wing 2.40, tail 1.50, exposed culmen .60, bill from nostril .42, 

 tarsus .82. 



4. Colopteryz* inornatus, sp. uov. 



Sp. char.— Similar to C. galeatus (Bodd.), but crest much less con- 

 spicuous, color above clearer and brighter olive-green, chin and throat 

 plain white or with scarcely discernible streaks of grayish (instead of 

 being distinctly streaked with dusky), and size somewhat less. 



Hahitat. — Lower Amazon (Diamantina). 



Adult female (Diamantina, Lower Amazon, Juno 16, 18S7; C. B. 

 Eiker) : Pileum dull olive, with some of the feathers on middle of crown 

 lengthened, and dusky with olivaceous edges ; hind-neck, back, scapu- 

 lars, rump, and upper tail-coverts plain clear olive-green ; wings and tail 

 dusky, the feathers distinctly margined with clear olive-green. Sides 

 of head light olivc-greeuish, with a dull grayish spot on central portion 

 of the auricular region, surrounded, except posteriorly, with pale buffy 

 brownish; chin and throat dull white, with very indistinct (almost 

 obsolete) streaks of pale grayish ; chest, breast, and belly purer white, 



* Colopter us Ca:b., Weigm. Archiv., xiii, 1347, 2o-Z, nee Ekicusox, ib. la42, 141) (,Coie- 

 optera). Type, C. pilaris Cab. 

 CoJoptenjx EiDGW. Same type, 



