174 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Adult female.— Length, (skins), 104-120 (113); wing, 58-66 (61.2); 

 tail, 43.5-48 (46); culmen, 11-14 (13.1); tarsus, 14-15 (14.1); middle 

 toe, 11-13 (11.9).« 



Southeastern Mexico, in States of Vera Cruz (Cordova; Play a 

 Vicente; Uvero; Buena Vista), Oaxaca, Tabasco (Teapa), and Yuca- 

 tan (La Vega), and southward through Guatemala (Choctum; sources 

 of Rio de la Pasion), British Honduras (Orange Walk; Cayo; Toledo 

 District; near Manatee Lagoon), Honduras (San Pedro; Montanas; 

 Santa Ana; Rio Blanco; Rio Segovia), Nicaragua (Castillo; Rio San 

 Juan; San Emilis, Lake Nicaragua) and Costa Rica (Grecia; Angos- 

 tura; San Jose; Tucurriqui; Guapiles; Carrillo; Corallillo; Guaj-abal; 

 Orosi; El Hogar; Guayabo; Jimenez; Pozo Azul de Pirris; Pozo del 

 Pital; Pozo del Rio Grande; Lagarto; Boruca; Paso Real; El General; 

 Tenorio; Buenos Aires; ElPozo deTerraba; Pigres; Pacuare; Palmar; 

 Bebedero; Cerro Santa Maria; Miravalles; La Vijagua; Bolson), to 

 Panama (SantaFede Veragua; Calovevora; Bugaba; Bibalaz; Volcan 

 de Chiriqui; Boquete; Divala; Panama; Lion Hill). 



Xenops mexicanus Sclater, Proc. Zool. Soc. Lond., 1856 (pub. Jan. 26, 1857), 

 289 (Cordova, Vera Cruz, Mexico; coll. A. Salle); 1859, 382 (Playa Vicente, 

 Vera Cruz); Cat. Am. Birds, 1862, 159 (Oaxaca).— Salvin, Ibis, 1861, 353 



a Eighteen specimens. 



Specimens from British Honduras are more buffy (less olivaceous) below and 

 piore rufescent above than those from Costa Rica, etc., the latter being much more 

 olivaceous (less brownish) below as well as above, than those from Mexico. Those 

 from the Santa Marta district of Colombia are paler above, with middle rectrices 

 cinnamomeous rather than rufescent, the under parts paler and grayer, wing shorter, 

 and tail longer. The species almost certainly requires further subdivision. 



