Todd-Carriker : Birds of Santa Marta Region^ Colombia. 293 



Xenops rutilus hetertirus Ridgway, Bull. U. S. Nat. Mus., No. 50, V, 191 1. 

 175 (Las Nubes, in range). 



Three specimens : Cincinnati and Las Vegas. 



These agree closely with specimens from Trinidad, Venezuela, etc. 



Two were taken in the vicinity of Cincinnati in the heavy forest 

 above 5,000 feet elevation, and one at Las Vegas. Mr. Smith secured 

 a single bird at Las Nubes. Apparently it takes the place of X. geni- 

 barbis neglectus in the Subtropical Zone. It is an inconspicuous, quiet 

 bird, easily overlooked where not common, and is usually to be found 

 feeding more among the upper branches of the tall trees than about 

 their trunks. 



246. Xenops genibarbis neglectus Todd. 



Xenops genibarbis (not of lUiger) Salvin and Godman, Ibis, 1880, 171 

 (Minca). — Sclatek, Cat. Birds Brit. Mus., XV, 1890, in (Minca). — 

 Bangs, Proc. Biol. Soc. Washington, XII, 1898, 138 ("Santa Marta").— 

 Allen, Bull. Am. Mus. Nat. Hist., XIII, 1900, 157 (Bonda, Minca, and 

 Cacagualito) . 



Xenops genibarbis mexicanus (not of Sclater) Ridgway, Bull. U. S. Nat. 

 Mus., No. 50, V, 191 1, 172 (Santa Marta region; crit.). 



Twenty-one specimens: Minca, Mamatpco, La Tigrera, Las Vegas, 

 Cincinnati, Fundacion, Don Diego, Dibulla, and Tucurinca. 



These agree well with specimens from northern Venezuela, upon 

 which X. genibarbis neglectus {Proceedings Biological Society of 

 Washington, XXVI, 1913, 173) was based. It is a pale race, readily 

 distinguishable from typical X. g. mexicanus by being less brownish, 

 more olivaceous in general coloration, with the wings and tail also 

 paler, more cinnamomeous. Costa Rican examples are intermediate be- 

 tween the two forms aforesaid : they have recently been named ridg- 

 wayi by Messrs. Hartert and Goodson (Novitates Zoologicce, XXIV, 

 1917, 417). As claimed by these authors, neglectus is really much 

 closer to littoralis of western Ecuador and Colombia. The writer has 

 not yet been able to consult a satisfactory series of this latter form, 

 but all Ecuador specimens so far examined appear to be appreciably 

 darker in general coloration than the Venezuelan and Santa Marta skins 

 in comparable plumage, with the wings and tail more rufous, less cin- 

 namomeous. Although not a strongly marked race, neglectus may 

 nevertheless be allowed to stand. 



A Tropical Zone bird of wide altitudinal distribution, ranging from 



