430 Bulletin American Museum of Natural History. [Vol. XXXVI, 



collected birds from Gualea, Ecuador (which are doubtless typical of grati- 

 osa) shows that specimens from the Andes west of Popayan are true gratiosa, 

 those from the Central Andes differ in having the rufous wing-bars narrower, 

 while two from the vicinity of Bogota show an appreciable approach toward 

 Ochihceca gratiosa jesupi (Allen) (of which we have four specimens, includ- 

 ing the type) in their somewhat yellower less olivaceous underparts, less 

 rufescent back, less blackish crown, and particularly, in their more nar- 

 rowly tipped wing-coverts, the last-named character being barely evident 

 in jesupi. Specimens from the Bogota region are, therefore, intermediate 

 and, though nearer gratiosa, indicate probable intergradation with jesupi. 

 Old 'Bogota' skins have the yellow areas paler than in fresh ones, and, it 

 may be added, that an old ' Quito ' specimen of gratiosa, while paler below, 

 is much more rufescent above than those secured by us at Gualea. 



Cerro Munchique, 2; Andes w. of Popayan, 1; Cocal, 3; Almaguer, 2; 

 Laguneta, 4; Sta. Elena, 1. 



(2678) Mecocerculus leucophrys setophagoides (Bonap.). 



Tyrannula setophagoides Bonap., Atti Sesta Riun. Sci. Ital. Milan, 1845, p. 405 

 (Bogotd). 



Abundant and conspicuous in scrubby growths in the Temperate Zone 

 of all three ranges. Having no Peruvian specimens I am unable to make 

 comparison with true leucophrys. Specimens from the Western and Cen- 

 tral Andes average slightly larger, and are perceptibly darker and with 

 the ochraceous wing-markings richer and wider than others from the Bogota 

 region. They are, however, wholly unlike the brown-backed Ochthosca 

 rufomarginata of Lawrence, assuming that the type and one topotype of 

 this species in the American Museum properly represent the species. Con- 

 sequently, while I agree with von Berlepsch ' that rufomarginata is better 

 placed in Mecocerculus than in Ochtkaeca, I cannot believe with Hellm&yr * 

 that it is subspecifically related to M. leucophrys. 



Old ' Bogota' skins are much browner above than the fresh ones obtained 

 by us, and their faded condition, not realized at the time, is responsible for 

 my description of Mecocerculus nigriceps^ from Las Palmales, eastern 

 Venezuela, the type of which agrees closely with the birds collected by us 

 at Chipaque. 



Paramillo, 4; Andes west of Popayan, 7; Valle de las Pappas, 7; Lagu- 

 neta, 3; Santa Isabel, 12; El Pinon, 5; Chipaque, 13. 



■ Proo. 4th Int. Cong., 1905, 489. 



2 Hellmayr, Archiv. fiir Naturg., 1912, 74. 



' Bull. Am. Mas. Nat. Hist., 1899, 154. 



