170 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
Southeastern Mexico, in States of Vera Cruz (ico), Tabasco 
(Teapa), and southward through Guatemala (Choctim), British 
Honduras (Toledo District), Honduras (Santa Ana; La Puerta; 
Chaloma), Nicaragua (Rio Escondido; San Emilis, Lake Nicaragua), 
Costa Rica (Sibahue, Talamanca; Jiménez; La Concepcién; Bonilla; 
El Hogar; El General; Pozo Aztl de Pirris; Pozo del Rio Grande; 
El Pozo de Térraba; Boruca; Paso Real, Boruca; La Vijagua; Pal- 
mar; Vole4n de Miravalles; Cerro Santa Maria), and Panama (Lion 
Hill; Panamaé; Boquete). 
Tinactor guatemalensis HARTLAUB, Rev. Zool., 1844, 370 (Guatemala). 
Sclerurus guatemalensis ScLaTER and Satvin, Ibis, 1859, 118 (Guatemala); Proc. 
Zool. Soc. Lond., 1864, 354 (Lion Hill, Panam4; crit.).—Satvin, Ibis, 1861, 
352 (Choctim, Guatemala).—ZE.Lep6n, Anal. Mus. Nac. Costa Rica, i, 1887, 
114 (Jiménez and Pozo Aztl de Pirris, Costa Rica; Panama).—Ripeway, Proc. 
U. 8. Nat. Mus., xii, 1890, 30 (monogr.); xiv, 1891, 471 (Santa Ana and La 
Puerta, Honduras).—Sciater, Cat. Birds Brit. Mus., xv, 1890, 117, part 
(Choctim, Guatemala; Panam4; not spec. c, which=S. brunneus Sclater).— 
Savin and Gopmay, Biol. Centr.-Am., Aves, ii, 1891, 168, pl. 44, fig. 1.— 
Ricumonp, Proc. U. 8. Nat. Mus., xvi, 1893, 498 (Rio Escondido, Nicara- 
gua).—CHeRRIE, Expl. Zool. Merid. Costa Rica, 1893, 38 (Palmdér and 
Boruca, s. w. Costa Rica).—UnbErwoop, Ibis, 1896, 440 (Volc4n Miravalles, 
Costa Rica).—Lantz, Trans. Kansas Acad. Sci. for 1896-97 (1899), 221 
(Chaloma, Honduras).—Banas, Proc. New Engl. Zool. Club, ii, 1900, 26 
(Loma del Leén, Panam4); Auk, xxiv, 1907, 299 (Boruca, Paso Re4l, and 
Pozo del Rio Grande, s. w. Costa Rica).—Carriker, Ann. Carnegie Mus., 
vi, 1910, 646 (Costa Rica; crit.). 
S[elerurus] guatimalensis BonAPARTE, Consp. Av., i, 1850, 210. 
[Sclerurus] guatemalensis Gray, Hand-list, i, 1869, 167, no. 2221.—Sciater and 
Satvin, Nom. Av. Neotr., 1873, 62.—SHarrr, Hand-list, iii, 1901, 73. 
Scleurus guatemalensis LAwRENcE, Ann. Lyc. N. Y., vii, 1863, 482 (Isthmus 
Panamd4). 
Scleurus caudacutus (not Thamnophilus caudacutus Vieillot) LawREeNcE, Ann. 
Lyc. N. Y. vii, 1862, 320 (Lion Hill, Panamé4). 
Scleurus mexicanus? (not Sclerurus mexicanus Sclater) Lawrence, Ann. Lyc. 
N. Y., vii, 1862, 465 (Lion Hill). 
Genus XENOPS Illiger. 
Xenops IntieER, Prodr. Orn., 1811, 213. (Type, X. genibarbis Illiger.) 
Neops 4 Viemiot, Analyse, 1816, 45. (Type, N. ruficaudus Vieillot=Xenops 
genibarbis Illiger.) 
Anecorhamphus > BittBere, Synop. Faune Scand., i, pt. ii, 1828, tab. A. (To 
replace Xenops Illiger.) 
Small scansorial Furnariide (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- 
@ ytoc, novus; dd, vultus. (Vieillot.) 
b dvjxw, I reach up to; &udoc, beak. (Oberholser.) 
