304 Annals of the Carnegie Museum. 



This species ranges over the whole of the littoral Tropical Zone ex- 

 cept in the Goajira Peninsula, but is more abundant in the humid por- 

 tions. It was fairly common, however, at Loma Larga, at an elevation 

 of not less than 2,500 feet, at the eastern extremity of the Sierra 

 Nevada. While a few were taken at Don Diego, and one at Valencia, 

 it seems to be commoner on the we'st side of the mountains, around 

 Tucurinca and Fundacion. It is almost entirely terrestrial in its habits, 

 but will often perch on a low shrub when flushed or disturbed. It 

 occurs only in the deep forest or the denser parts of the woodland 

 along streams. 



Gymnocichla nudiceps sancta-martse Ridgway. 



Pyriglena nudiceps (not Myiothera nudiceps Cassin) Sclater, Proc. Z06I, 



Soc. London, " 1854," 1855, 113, in text ("Santa Marta"). 

 Gymnocichla nudiceps Sclater, Proc. Z06I. Soc. London, 1858, 274 (" Santa 



Marta"). — Sclater, Cat. Birds Brit. Mus., XV, 1890, 272 ("Santa Marta"). 



— Salvin and Godman, Biol. Centr.-Am., Aves, II, 1892, 223 (" Santa 



Marta," in range, ex Sclater). 

 Gymnocichla nudiceps sanc'ta-martcB Ridgway, Proc. Biol. Soc. Washington, 



XXI, 1908, 194 (" Santa Marta " ; orig. descr. ; type in coll. U. S. Nat. 



Mus.). — Ridgway, Bull. U. S. Nat. Mus., No. 50, V, 191 1, 99 (diag. ; range; 



ref. orig. descr.). 

 Gymnocichla sanctce-marta Brabourne and Chubb, Birds S. Am., I, 1912, 208 



(ref. orig. descr.; range). 



Mr. Carriker did not succeed in detecting a Gymnocichla in the Santa Marta 

 region. Its inclusion in the list rests on a specimen in the British Museum 

 (probably one of those previously referred to by Sclater) purporting to come 

 from Santa Marta, and on another in the U. S. National Museum, which has 

 been made the type of a new subspecies by Mr. Ridgway. The characters 

 which he assigned for its separation are not all borne out by an examination 

 of the specimens, clearly referable to this form, in our collection from adja- 

 cent regions of Colombia," the whit& on the under wing-coverts proving to be a 

 variable character. Males, however, have the concealed white interscapular 

 patch much larger than in Costa Rican birds, and the posterior under parts 

 duller black. . Females of the two forms differ more conspicuously, that of 

 sancta-martce having the upper parts sepia where they are raw umber in the 

 Costa Rican bird. If this species actually occurs in the Santa Marta region 

 ■ at all, it would probably be in the alluvial forest region of the Cienaga Grande. 



257. Cercomacra nigricans Sclater. 



Cercomacra nigricans Sclater, Proc. Z06I. Soc. London, 1858, 245 ("Santa 

 Marta" and "Bogota"; orig. descr.; type now in coll. Brit. Mus.; crit.). — 

 Sclater, Cat. Am. Birds, 1861, 184 ("Santa Marta"). — Giebel, Thes. Orn., 



