168 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
(Cérdova; Cobén, Guatemala); Cat. Birds Brit. Mus., xv, 1890, 115 (Cérdova; 
Raxché, Cob4n, Savana Grande, and Volcén de Agua, Guatemala; Calové- 
vora, Cordillera de Tolé, and Santiago de Verdégua, Panam4; Bogoté and 
Frontino, Colombia; Intaj and Sarayacu, Ecuadér; Yurimdguas, e. Peru; 
Capim R., lower Amazons; Bahia?).—Satvin and SciaTer, Ibis, 1860, 35 
(Cob4n; crit.).—Sctater and Satvin, Proc. Zool. Soc. Lond., 1867, 574 
(Capim R.; crit.), 750, 755 (Yurimaguas and Chyavetas, e. Peru); 1873, 269 
(Yurimaguas, e. Peru).—Satvin, Ibis, 1861, 143 (Raxché, Guatemala); 
Proc. Zool. Soc. Lond., 1867, 142 (Santiago and Cordillera de Tolé 
Panamé4; crit.); 1870, 191 (Calovévora, Panam4).—Sumicurast, Mem. Bost. 
Soc. N. H., i, 1869, 555 (tierra caliente of Vera Cruz, up to 1300 m.); La 
Naturaleza, v, 1881, 247 (Orizaba and Protrero, Vera Cruz).—Sancuez, Anal. 
Mus. Nac. Mex., i, 1877, 97 (Vera Cruz).—TaczaANowskI, Orn. du Pérou, ii, 
1884, 115 (Yurimaguas).—Ripeway, Proc. U. 8. Nat. Mus., xii, 1890, 25 
(monogr.); xiv, 1891, 471 (Vole4n de Puca, Honduras).—Satvin and Gop- 
MAN, Biol. Centr.-Am., Aves, ii, 1891, 167.—Carrixer, Ann. Carnegie Mus., 
vi, 1910, 645 (Costa Rica).—CHarman, Bull. Am. Mus. N. H., x, 1898, 32 
(Jalapa).—Banes, Proc. New Engl. Zool. Club, ii, 1900, 26 (Loma del Leén, 
Panam4é).—GoELpI, Ibis, 1903, 499 (Capim R.,.n. e. Brazil). 
[Sclerurus] mexicanus Gray, Hand-list, i, 1869, 167, no. 2219.—PELzELN, Orn. 
Bras., iv, Abth., 1870, 419.—ScLaTeR and Satvin, Nom. Av. Neotr., 1873, 
62.—SuHarpe, Hand-list, iii, 1901, 72. 
(?) Sclerurus rufigularis Peuzetn, Orn. Bras., ii Abth., 1869, 161 (Maribatanas; 
ex ‘“‘ Tinactor rufigularis, Natterer, Catal. msc.’’).¢ 
Sclerurus caudacutus (not Thamnophilus caudacutus Vieillot) SctatER and SaLvin, 
Proc. Zool. Soc. Lond., 1879, 520 (Antioquia, Colombia).—TaczaNnowskI, 
Orn. du Pérou, ii, 1884, 114. 
SCLERURUS MEXICANUS PULLUS Bangs. 
DUSKY SCLERURUS. 
Similar to 8S. m. mexicanus but coloration much darker, the back, 
etc., dark sepia, the lower rump and upper tail-coverts deep van- 
dyke to deep chocolate or walnut brown. 
Adult male.—Length (skins), 146-160 (153); wing, 76.5-81 (78.7); 
tail, 56-57 (56.5); culmen, 21-24 (22.5); tarsus, 21-21.5 (21.2); 
middle toe, 18-19 (18.5).° 
Adult female.—Length (skins), 146-156 (151); wing, 75-78 (76.5); 
tail, 50-54.5 (52.2); culmen, 20-21.5 (20.7); tarsus, 20-22 (21); 
middle toe, 18-19.5 (18.7).° 
Caribbean slope of western Panama (Boquete, Chiriqui) and Costa 
Rica (Cariblanco de Sarapiquf). 
Sclerurus mexicanus pullus Banas, Proc. New Engl. Zool. Club, iii, Jan. 30, 1902, 
45 (Boquete, Chiriqui, Panama, 5,000 ft.; coll. E. A. and O. Bangs). 
@ Brown, the lower back rufescent, throat and upper neck ochraceous, breast washed 
with ferruginous, tail blackish. Length (dried skin), 6’, wing 3 1’”, tail 2” 3”, 
bill, to rictus, 11””, tarsus 93’. (Translation of original description.) 
b Two specimens. 
