Todd-Carriker : Birds of Santa Marta Region, Colombia. 311 



schisticolor in the restriction of the black throat-patch, and the fe- 

 male being usually less brownish above. Immature males resemble 

 adult females, but the upper parts are decidedly grayish. The species 

 is known to range eastward into Venezuela. 



A rare bird, detected in this region thus far only on the southwest 

 slopes of the San Lorenzo at an altitude of from 4,000 to 5,000 feet, 

 in the Subtropical Zone. Mr. Smith secured five specimens here, and 

 the writer has taken eight more, all practically in the same place, that 

 is, within a radius of two miles. It is an inhabitant of the heavy 

 forest, keeping down among the smaller trees and undergrowth. 



262. Myrmopagis melaena melaena (Sclater). 



Five specimens: Fundacion and Trojas de Cataca. 



In the absence of any actual or presumptive evidence of intergrada- 

 tion between Myrmopagis axillaris and M. melccna it seems wiser 

 to follow Mr. Ridgway in treating them as distinct species, both sexes 

 of the two forms differing so widely in their characters inter sc. But 

 M. melcena is divisible into two geographic races, as recently pointed 

 out by Dr. Chapman {Bulletin American Museum of Natural History, 

 XXXVI, 1917, 375), and independently ascertained by the present 

 writer, from a comparison of a series from Costa Rica with another 

 from Colombia. Costa Rican males average blacker above, while fe- 

 males from that country are duller, less uniformly buffy below, with 

 more dark suffusion on the throat and breast, than Colombian females. 

 The two females from Fundacion are like others from the interior of 

 Colombia in this respect, but above they are noticeably paler. The 

 species having been described from a " Bogota " skin, the form in- 

 habiting Central America and western Colombia will stand as M. 

 melcena albigula (Lawrence). 



Apparently a rare bird in this region, having been taken so far only 

 in the lowlands at the southwestern end of the mountains. It was 

 found in the forest among the tangled undergrowth and masses of 

 vines. 



263. Dysithamnus olivaceus (von Tschudi). 

 One specimen : Loma Larga. 



Mr. Hellmayr (Archiv fur Naturgeschichtc, LXXXV, A, 1920, 

 85) has shown that von Tschudi's name olivaceus will have to be used 

 for this form, instead of scmicinereus of Sclater, recently employed 



