348 BtTLLETIN 50, UNITED STATES NATIONAL MUSEUM. 



maxilla and mandible with a basal embossed lamina of whitish, this 

 includiag lower edge of the mandibular rami; bare orbital space 

 dusky (in dried skins); iris yellow; legs and feet buffy olive (ki dried 

 skins), greenish in life. 



Adult male.— Length (skin), 430-470 (450); wing, 151-155.5 (163.6); 

 tail, 155.5-166.5 (162.9); culmen, (chord), 101-5-118 (108.4); tarsus, 

 33-34 (33.7); outer anterior toe, 28-32.5 (29.7)." 



Adult femaWi— Length (skin), 450; wing, 142-152 (147); tail, 153- 

 154.5 (153.7); cxilmen, 95-104 (99.5); tarsus, 33.5; outer anterior 

 toe, 29. ^ 



Northwestern Colombia, near Isthmus of Panama (Rio Truando) ; 

 western Colombia (Naranjito, Rio Dagua); northwestern Ecuador 

 (Paramba). 



A specimen from northwestern Ecuador (Paramba) is precisely like 

 those from the Rio Truando ia coloration, and essentially the same in 

 measurements. 



Pteroglossus erythropygius (not of Gould, 1843) Goitld, Men. Bamphastidse, 2d ed., 

 1854, pi. 21 (upper fig.).— Cassin, Proc. Ac. Nat. Sci. Phila., 1860, 136 (Rio 

 Truando, Colombia). 



Fteroglosaus sanguineiis Gould, Mon. Ramphastidse, 2d ed., 1854, in text to pi. 21 

 (locality tuikiiown; coll. J. Gould). — Cassin, Proc. Ac. Nat. Sci. Phila., 

 1867, 109 (Rio Truando, Colombia; crit.). — Sclatbk, Cat. Birds Brit. Mus., 

 xix, 1891, 143 (n. Colombia). — Salvin and Godman, Biol. Centr.-Am., Aves, 

 ii, 1896, 557 (Rio Truando). 



Genus SELBNIDERA Gould. 



SeUnidera Gould, Icon. Av., pt. 1, 1837, text to pi. 7. (Type, Pteroglossus 



gouldii Gould.) 

 Piperivorus Bonaparte, Ateneo Italiano, ii, 1854, 119 (Consp. Vol. Zygod., 



1854, 4) . (Type, Ramphastos piperivorus Linneeus.) 

 RampJmstoides Cassin, Proc. Ac. Nat. Sci. Phila., 1867, 117. (Type, Selenidera 



spectabilis Cassin.) 



Medium-sized to rather small Ramphastidse (length about 275-395 

 mm.) with the graduated tail not longer (usually shorter) than wing, 

 auricular feathers elongated and yeUow, no red on rump or upper tail- 

 coverts (the under tail-coverts, however, red or partly so), throat, 

 chest, and breast uniform black in males, chestnut-tawny or gray in 

 females, the adult male usually with a yellow or orange flank-patch 

 of elongated feathers. 



Bin less than half to three-fourths as long as wing, deeper than wide 

 at base, the culmen arched (more or less) from base, broadly rounded 

 basaUy, narrowly roimded terminally, where strongly decurved, the 

 tip of maxilla strongly uncinate; sides of biU smooth, without indi- 

 cation of ridge or groove or lateral compression or concavity of maxiUa; 

 gonys as long as mandibular rami to twice as long, narrowly rounded, 



a Four specimens. 6 Two specimens. 



