1887.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 493 



Dendrocincla tnrdina Gray, List Gen. B., 1840, 23 ; Gen. B., i, 1849, 141. 



BONAP., Consp., i, 1850, 209.— Cab. & Heine, Mus. Hein., ii, 1859, 34 

 (Brazil).— Reich., Handb., i, 1850, 191, pi. 535, fig. 3671.— Scl. & Salv. 

 P. Z. S., 1868,54 (Brazil); Norn. Neotr., 1873, 67 (do).— Pelz., Orn! 

 Bras., 1871, 42 (Rio Janeiro and Refjisto do Sai). 



Six 3pecimen.s (3 from Babia, 1 from "Brazil," ami 2 from tlie Lafres- 

 naye collection), agreeing very closely with one another in coloration, 

 but differing considerably in size. 



8. Dendrocincla atrirostris (Lafh. & D'Orb.). 



DendrocoJaptes atrirostrin Lafh. & D'Orb,. Mag. de Zool., 18.38, Class ii, p. 12 



(Guarayos, Bolivia).— D'Orb., Voy. Am. Merid., iv, pt. 3, 1839, 369; atl. 



pi. 54, fig. 1. 

 Dendrocops atrirostris 'La.fh.jUqy. eiMag. Zool., 1851, 466 (part: Bolivia); 



Mon. Dendroc. 1851(?), 85 (do). 

 Dendrocincla atrirostris Bonap., Consp., i, 1850, 209.— ScL. & Salv., P. Z. S., 



1668, 54, part (Bolivia) ; Noni. Neotr., 1873, 67 (part). 



In the catalogue of the Lafresnaye collection three specimens are 

 given as '• types" of this species. These three specimens 1 have been 

 able to examine, thanks to the authorities of the Boston Society of Nat- 

 ural History, ami tind them to belong to two easily recognizable si)ecies, 

 two of them (Nos. 2308 and 2301)) being evidently the true J), atrirostris 

 and the third (No. 2307) the same species as that described by Mr. Law- 

 rence in 1862, from Panama specimens, under the name of D. oUvacea. 

 This specimen is, therefore, without much doubt, from Colombia, since 

 in 1851 Lafresnaye added Colombia to the habitat of the species — prob- 

 ably from this ver^^ specimen. 



9. Dendrocincla rufo-olivacea, sp. nov. 



Sp. Char. — Somewhat like D. olivacea Lawr., but head, neck, and 

 body olivaceous instead of brown, remiges deep chestnut rufous instead 

 ot dull rusty or mars-brown. 



Habitat. — Lower Amazon (Diamantina). 



Adult male (type. No. 112,281, Diamantina, Lower Amazon, June 15 

 1887 ; C. B. liiker) : Head, neck, and body olivaceous, tinged with 

 raw-umber brown, especially on upper parts ; the lower parts con- 

 siderably paler than the upper, except across chest, the chin and 

 upper throat inclining to dull light buffy, the lower throat marked with 

 narrow streaks of the same ; a distinct post-ocular or supra-auricular 

 streak of light bnffy ; sides of head lighter olivaceous than pileum, 

 marked with very tine, indistinct shaft-streaks of buffy. Wingcoverts 

 much like back, but somewhat tinged with rusty, the inner webs of 

 greater coverts entirely chestnut rufous; remiges bright chestnut-rufous, 

 in very strong contrast with color of back, the terminal portion, for a 

 considerable distance, of six outer primaries, dull brownish dusty. Tail 

 chestnut, with darker (almost blackish) shaft-streaks. Upper and und*r 

 tail-coverts chestnut-rufous, rather lighter and duller than secondaries; 

 axillars and under wing-coverts fine ochraceous-buff. Bill brownish- 



