720 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



rump and upper tail-coverts plain grayish brown (deep hair brown) 

 the feathers (especially longer upper tail-coverts) sometimes nar- 

 rowly and indistinctly margined at tip with paler; tail slightly darker 

 grayish brown, the rigid shafts of rectrices black; wings black, 

 slightly glossed with greenish blue; under parts plain grayish brown 

 (like color of rump and upper tail-coverts), fading on throat and 

 chin into much paler gray (sometimes almost grayish white), the 

 feathers dusky grayish brown basally; bill black; iris brown; legs 

 and feet grayish brown (more or less livid in life). 



Young. — Not noticeably if at all different in coloration from adults. 



Adult male. —Length (skins), 91-106 (99); wing, 104.5-116.5 

 (111.2); tail, 34-38 (36.2); culmen, 4.5-6 (5); tarsus, 10-11 (10.3); 

 middle toe, 7-8 (7.5).° 



Adultfemale.— Length (skins), 95-110 (104); wing, 107-115 (111.8); 

 tail, 35.5-38.5 (37.1); culmen, 4.5-5.5 (4.9); tarsus, 10-11 (10.5); 

 middle toe, 7-8 (7.6).^ 



Southeastern Mexico, in States of Tamaulipas (Carricitos; Gui- 

 aves) , Vera Cruz (Motzorongo ; San Andres Tuxtla ; Volcan de Tuxtla) 

 and Oaxaca (Guichicovi; Santo Domingo) and southward through 

 Guatemala (Gualan; Duehas, Los Amates, Ysabal), Nicaragua (Rio 

 Escondido) and Costa Rica (La Hondura; Volcan de Irazii; Carrillo; 

 Cariblanco de Sarapiqui; El General; Coliblanco; Guayabo; Juan 

 Vinas; Laguaria, Copey, Las Vueltas, and Santa Maria, Dota) to 

 western Panama (Chiriqui). 



Chsetura gaumeri (not of Lawrence) Ridgway, Proc. U. S. Nat. Mus., vi, 1883, 

 415 (Costa Rica). — Salvin, Ibis, 1889, 367, part (Chiriqui, Panama; crit.). — 

 Hartert, Cat. Birds Brit. Mus., xvi, 1892, 482, part (Costa Rica). — Rich- 

 mond, Proc. U. S. Nat. Mus., xvi, 1893, 516 (Rio Escondido, Nicaragua). — 

 Salvin and Godman, Biol. Centr.-Am., Aves, ii, 1894, 376, part (Rio Escon- 



