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).[1]
Southeastern Mexico, in States of Vera Cruz (Córdova; Playa Vicente; Uvero; Buena Vista), Oaxaca, Tabasco (Teapa), and Yucatan (La Vega), and southward through Guatemala (Choctúm; sources of Rio de la Pasión), British Honduras (Orange Walk; Cayo; Toledo District; near Manatee Lagoon), Honduras (San Pedro; Montañas; Santa Ana; Rio Blanco; Rio Segóvia), Nicaragua (Castillo; Rio San Juan; San Emilis, Lake Nicaragua) and Costa Rica (Grécia; Angostura; San José; Tucurríqui; Guápiles; Carrillo; CoralliUo; Guayabál; Orosí; El Hogár; Guayabo; Jiménez; Pozo Azúl de Pirrís; Pozo del Pitál; Pozo del Rio Grande; Lagarto; Boruca; Paso Reál; El Generál; Tenório; Buenos Aires; El Pozo de Térraba; Pigres; Pacuare; Palmár; Bebedero; Cerro Santa Maria; Miravalles; La Vijágua; Bolsón), to Panamá (Santa Fé de Verágua; Calovévora; Bugaba; Bibalaz; Volcan de Chiriquí; Boquete; Divala; Panamá; Lion Hill).
- Xenops mexicanus Sclater, Proc. Zool. Soc. Lond., 1856 (pub. Jan. 26, 1857), 289 (Córdova, Vera Cruz, Mexico; coll. A. Sallé); 1859, 382 (Playa Vicente, Vera Cruz); Cat. Am. Birds, 1862, 159 (Oaxaca). — Salvin, Ibis, 1861, 353
- ↑ Eighteen specimens.
Locality. Wing. Tall. Culmen. Tarsus. Middle
toe.males. Two adult males from Vera Cruz, Mexico 64 50 13 14.5 12.5 Three adult males from British Honduras 63.5 48.5 13.2 14.8 12 Five adult males from Honduras 63.1 47.2 13.3 14.5 11.8 Ten adult males from Nicaragua (1) and Costa Rica (9) 65.2 49.6 13.3 14.9 12.1 Two adult males from western Panamá (Divala, Chiriquí) 66.2 52.2 13.5 14.7 12.2 Two adult males from eastern Panamá (line of railway) 60.7 45.5 12.7 14.5 12 One adult male (X. g. genibarbis) from Surinám 67 52.5 15 14.5 12 One adult male (X. g. genibarbis) from Brazil (Maribatanas) 63.5 41.5 14 15 11.5 females. One adult female from Vera Cruz 61 46 13 14.5 12 One adult female from Yucatan 62 46 13.5 14 11.5 Two adult females from British Honduras 60 46 12.7 14 11.2 One adult female from Honduras 60 46 13 14 11.5 Ten adult females from Costa Rica 61.6 45.7 13 14.5 12.2 Two adult females from western Panamá 62.5 47 13.7 14.5 11.7 One adult female from eastern Panamá 58 46.5 12.5 14 12 Specimens from British Honduras are more buffy (less olivaceous) below and more 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.
