620 NEW BIRDS FROM TIIF^ LOWER AMAZOlN'. 



the first rather distiuctly streaked with grayish ; si<les ami Hanks yel- 

 lowish olive, tiuged with sulphur-yellow, and iudistinetly streaked with 

 dark grayish ; axillars and under wing-coverts pale sulphur-yellowish. 

 Bill brownish black with paler tomia and a little whitish at base of lower 

 mandible, underneath; legs and feet horn-color. Length (skin) 3.30; 

 wing 1.75, tail 1.20, exposed culmen .40, width of bill at frontal feathers 

 .20, tnrsus .GO, middle too .40. 



Although this species is in ever}* way more closely related to C. galeatus 

 (BoDD.) than to G. pilaris Cab., it is in some respects intermediate, thus 

 in a measure connecting these two very dissimilar species. It need, 

 however, be compared only with the former, though it is sufficiently 

 distinct to render comparison hardly necessary. 



5. Ornithion napaeura, sp. nov. 



Sp. char. — Similar to 0.2iusiUum (Cab.), from Colombia and Panama, 

 but decidedly smaller, darker above, with pileum less brownish, and 

 wing-bands much narrower. 



HaMtat. — Lower Amazon (Diamantina). 



Adult female (type, Diamantina, Lower Amazon, July 9, 1887; C. B. 

 Riker) : Pileum uniform dusky; hind-neck, back, and scapulars dark 

 olive, becoming lighter and more greenish olive on rump, the upper tail- 

 coverts rather more brownish. Wings dusky, the middle and greater 

 coverts tipped with brownish white, forming two distinct though rather 

 narrow bands; tertials distinctly edged with dull white; secondaries 

 more narrowly edged, for terminal two-thirds, with yellowish white, the 

 basal portion plain dusky ; primaries very narrowly edged with grayish 

 white. Tail dusky, the feathers indistinctly edged with olive, and very 

 narrowly tipped with light grayish brown. An indistinct superciliary 

 stripe (not extending back of eye) dull grayish white; lores dull grayish, 

 becoming dusky immediately in front of eye ; auriculars similar to 

 pileum, but lighter, and with very narrow whitish shaft-streaks ; side of 

 neck paler than hind-neck. Chin and throat dull grayish white ; rest of 

 under i)arts pale sulphur-yellow, tinged with olive-grayish across chest 

 and more strongly washed with olive on sides and flanks ; axillars and 

 under wing-coverts pale sulphur-yellow, like belly. Upper mandible 

 black, lower black at tip, fading into pale brownish basally ; legs and 

 feet black. Length (skin) 3.30; wing 1.90, tail 1.55, exposed culmen 

 28, bill from nostril .23, tarsus .50.* 



Young (presumably the same species, but possibly different ; Diaman. 

 tina, July 13, 1887 ; C. B. E.) : Pileum dull, rather dark, brownish gray, 

 the hind-neck considerably paler ; back and scapulars dull, rather light, 

 brownish olive, changing to dull light cinnamon or Isabella-color on 



* The correspouiliug measurements of two adults of O. piisilluvi from Panama are 

 as follows: 3.50-3.60; 2.05-2.10,1.05-1.75; .30 ; .22-.25 ; .50. These measurements, 

 excepting the last three, are so different from those given hy Dr. Sclatcr for what he 

 considers the same species (of. P. Z. S. 1873, p. 577) that I am nnable to account for 

 the discrepauey. 



