Southeastern Mexico, in States of Vera Cruz (Jico), Tabasco (Teapa), and southward through Guatemala (Choctúm), British Honduras (Toledo District), Honduras (Santa Ana; La Puerta; Chaloma), Nicaragua (Rio Escondido; San Emilis, Lake Nicaragua), Costa Rica (Sibahue, Talamanca; Jiménez; La Concepción; Bonilla; El Hogár; El Generál; Pozo Azúl de Pirrís; Pozo del Rio Grande; El Pozo de Térraba; Boruca; Paso Reál, Boruca; La Vijágua; Palmár; Volcán de Miravalles; Cerro Santa Maria), and Panamá (Lion Hill; Panamá; Boquete).
- Tinactor guatemalensis Hartlaub, Rev. Zool., 1844, 370 (Guatemala).
- Sclerurus guatemalensis Sclater and Salvin, Ibis, 1859, 118 (Guatemala); Proc. Zool. Soc. Lond., 1864, 354 (Lion Hill, Panamá; crit.). — Salvin, Ibis, 1861, 352 (Choctúm, Guatemala). — Zeledón, Anal. Mus. Nac. Costa Rica, i, 1887, 114 (Jiménez and Pozo Azúl de Pirrís, Costa Rica; Panamá). — Ridgway, Proc. U. S. Nat. Mus., xii, 1890, 30 (monogr.); xiv, 1891, 471 (Santa Ana and La Puerta, Honduras). — Sclater, Cat. Birds Brit. Mus., xv, 1890, 117, part (Choctúm, Guatemala; Panamá; not spec, c, which = S. brunneus Sclater). — Salvin and Godman, Biol. Centr.-Am., Aves, ii, 1891, 168, pl. 44, fig. 1. — Richmond, Proc. U. S. Nat. Mus., xvi, 1893, 498 (Rio Escondido, Nicaragua). — Cherrie, Expl. Zool. Merid. Costa Rica, 1893, 38 (Palmár and Boruca, s. w. Costa Rica). — Underwood, Ibis, 1896, 440 (Volcán Miravalles, Costa Rica). — Lantz, Trans. Kansas Acad. Sci. for 1896-97 (1899), 221 (Chaloma, Honduras). — Bangs, Proc. New Engl. Zool. Club, ii, 1900, 26 (Loma del León, Panamá); Auk, xxiv, 1907, 299 (Boruca, Paso Reál, and Pozo del Rio Grande, s. w. Costa Rica). — Carriker, Ann. Carnegie Mus., vi, 1910, 646 (Costa Rica; crit.).
- S[clerurus] guatimalensis Bonaparte, Consp. Av., i, 1850, 210.
- [Sclerurus] guatemalensis Gray, Hand-list, i, 1869, 167, no. 2221. — Sclater and Salvin, Nom. Av. Neotr., 1873, 62. — Sharpe, Hand-list, iii, 1901, 73.
- Scleurus guatemalensis Lawrence, Ann. Lyc. N. Y., vii, 1863, 482 (Isthmus Panamá) .
- Scleurus caudacutus (not Thamnophilus caudacutus Vieillot) Lawrence, Ann. Lyc. N. Y. vii, 1862, 320 (Lion Hill, Panamá).
- Scleurus mexicanus? (not Sclerurus mexicanus Sclater) Lawrence, Ann. Lyc. N. Y., vii, 1862, 465 (Lion Hill).
Genus XENOPS Illiger.
Small scansorial Furnariidæ (length about 115 mm.) with short, stout, wedge-shaped bill with strongly recurved, falcate mandible;
tail (black and cinnamon-rufous) shorter than wing, with round-
