168 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



(Cordova; Cob4n, Guatemala); Cat. Birds Brit. Mus., xv, 1890, 115 (C6rdova; 

 Raxch6, Cobdn, Savana Grande, and Volcan de Agua, Guatemala; Calov6- 

 vora, Cordillera de Tole, and Santiago de Verdgua, Panama; Bogota and 

 Frontino, Colombia; Intaj and Sarayacu, Ecuador; Yurimaguas, e. Peru; 

 Capim R., lower Amazons; Bahia?). — Salvin and Sclater, Ibis, 1860, 35 

 (Cobdn; crit.). — Sclater and Salvin, Proc. Zool. Soc. Lend., 1867, 574 

 (Caplm R.; crit.), 750, 755 (Yimmaguas and Chyavetas, e. Peru); 1873, 269 

 (Yurimaguas, e. Peru) .^Salvin, Ibis, 1861, 143 (Raxche, Guatemala); 

 Proc. Zool. Soc. Lond., 1867, 142 (Santiago and Cordillera de Tole 

 Panama; crit.); 1870, 191 (Calov^vora, Panamd). — Sumichrast, 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).— Sanchez, Anal. 

 Mus. Nac. Mex., i, 1877, 97 (Vera Cruz).— Taczanowski, Orn. du Perou, ii, 

 1884, 115 (Yurimaguas).— RiDGWAY, Proc. U. S. Nat. Mus., xii, 1890, 25 

 (monogr.); xiv, 1891, 471 (Volcdn de Puca, Honduras). — Salvin and God- 

 man, Biol. Centr.-Am., Aves, ii, 1891, 167.— Carriker, Ann. Carnegie Mus., 

 vi, 1910, 645 (Costa Rica).— Chapman, Bull. Am. Mus. N. H., x, 1898, 32 

 (Jalapa).— Bangs, Proc. New Engl. Zool. Club, ii, 1900, 26 (Loma del Le6n, 

 Panama). — Goeldi, Ibis, 1903, 499 (Capim R., n. e. Brazil). 



[Sclenirus] mexkanus Gray, Hand-list, i, 1869, 167, no. 2219.— Pelzeln, Orn. 

 Bras., iv, Abth., 1870, 419.— Sclater and Salvin, Nom. Av. Neotr., 1873, 

 62.— Sharpe, Hand-list, iii, 1901, 72. 



(?) Sclerunis rufgularis Pelzeln, Orn. Bras., ii Abth., 1869, 161 (Maribatanas; 

 ex " Tinactor rufigularis, Natterer, Catal. msc.").« 



Sclerurus caudacutus (not Thamnophilus caudacutus Vieillot) Sclater and Salvin, 

 Proc. Zool. Soc. Lond., 1879, 520 (Antioquia, Colombia).— Taczanowski, 

 Cm. du Perou, ii, 1884, 114. 



SCLERURUS MEXICANUS PULLUS Bangs. 



DUSKY SCLERURUS. 



Similar to S. 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.— Ijewgtlx (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.— Ij&ngili (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 SarapiquI). 



Sclerurus mexicanus pullus Bangs, Proc. New Engl. Zool. Club, iii, Jan. 30, 1902, 

 45 (Boquete, Chiriqui, Panama, 5,000 ft.; coll. E. A. and O. Bangs). 



a Brown, the lower back rufescent, throat and upper neck ochraceous, breast washed 

 with ferruginous, tail blackish. Length (dried skin), 6'^ wing 3'^ V, tail 2'^ ^''', 

 bill, to rictus, 11'^^, tarsus d^"' (Translation of original description.) 



^ Two epecimena. 



