124 BULLETIN 50, UNITED STATES N/ TIONAL MUSEUM. 



Southwestern Costa Rica (Pozo del Rio Grande, Paso Real, Lagarto, 

 Boruca, and Barranca, Boruca; Buenos Aires; El General; Pozo del 

 Pital, Rio Naranjo; Pozo de Terraba; Pozo Azul de Pirris; Las 

 Trojas) and western Panama (Divala; Bugaba; Cliiriqui). 



Myrmornis hoffmanni Cabanis, Journ. fiir Orn., Mar., 1861, 95 (Costa Rica; coll. 

 Berlin Mus.)- 



Formicarius hoffmanni Lawrence, Ann. Lye. N. Y., ix, 1868, 110 (Costa Rica). — 

 Frantzius, Joiirn. fiir Orn., 1869, 306 (Costa Rica). — Salvin, Proc. Zool. 

 Soc. Lond., 1866, 75, part (Costa Rica); 1870, 195 (Bugaba, Panamd).— 

 Zeled6n, Anal. Mus. Nac. Costa Rica, i, 1878, 115, part (Las Trojas and 

 Pozo Azul de Pirris, Costa Rica). — Sclater, Cat. Birds Brit. Mus., xv, 1890, 

 304, part (Bugaba, Verdgua, and Chiriqui, Panamd). — Salvin and God- 

 man, Biol. Centr.-Am., Aves, ii, 1892, 234, part (Las Trojas, Costa Rica; 

 Chiriqui and Bugaba, Panamd). — Carriker, Ann. Carnegie Mus., vi, 1910, 

 623 (s.'w. Costa Rica, up to 1,500 ft.; crit.; habits). 



[Formicarius] hoffmanni Sclater and Salvin, Nona. Av. Neotr., 1873, 75, part 

 (Costa Rica). — Sharpe, Hand-list, iii, 1901, 39, part (s. w. Costa Rica). 



Formicarius hoffmanni hoffmanni Bangs, Auk, xxiv, July, 1907, 298 (Boruca, 

 Paso Redl, Pozo del Rio Grande, Lagarto, and Barranca, s. w. Costa Rica; 

 crit.). 



Flormicariusl moniliger hoffmanni Ridgway, Proc. Biol. Soc. Wash., xxi, Oct. 

 20, 1908, 195, in text. 



Formicarius umbrosus (not of Ridgway) Bangs, Auk, xviii, 1901, 366 (Divala, 

 Panam^). 



FORMICARIUS MONILIGER PANAMENSIS Ridgway. 



PANAMA ANTTHRTJSH. 



Similar to F. m. li.offmanni but averaging smaller, and coloration 

 much lighter, the under parts more strongly suffused with olive and 

 buffy, and color of under tail-coverts lighter, more tawny; black 

 gular area more frequently(?) bordered posteriorly with a more or 

 less distinct collar of deep vinaceous-cinnamon or dull cinnamon- 

 rufous, or indication of one. 



Adult male.— Length (skins), 153-172 (162); wing, 86-88 (87); 

 tail, 50-55 (52.4); culmen, 20.5-21.5 (20.7); tarsus, 30-32 (30.9); 

 middle toe, 18-19.5 (1S.9).« 



Adult female.— Length (skins), 144-161 (154); wing, 84-88.6 

 (^6.9); tail, 48-51.5 (49.7); culmen, 18.5-20.5 (19.9); tarsus, 30-32 

 (31); middle toe, 17-20 (18) .« 



Eastern Panama (Lion Plill, Obispo, and Paraiso stations, Panama 

 railway; Chepo; Laguna del Pita; Cascajal, Code); Colombia (Rem6- 

 dios, Antioquia) ? 



Formicarius analis (not Myothera analis Lafresnaye) Lawrence, Ann. Lye. N. Y., 



vii, 1862, 326 (Liou Hill station, Panam^). 

 Formicarius hoffmanni (not Myrmornis hoffmanni Cabanis) Sclater and Salvin, 



Proc. Zool. Soc. Lond., 1864, 357 (Lion Hill, Panamd);(?) 1879, 526 (Rem^- 



a Four specimens. 



