640 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Costa Rica (San Jose; San Mateo; Alajuela; Volcan delrazu; Guiatil; 

 Palmar; Lagarto; Boruca; T6rraba; Navarro de Cartago; Cervantes 

 de Cartago; Pozo Azul de Pirris; Buenos Aires) and Nicaragua. 



Thryothorm modesius Cabanis, Journ. fiir Orn., viii, Nov., 1860, 409 (San Jos^, 

 Costa Eioa; coll. Berlin Mus.)— Sclater, Cat. Am. Birds, 1862,Suppl.,no. 

 129 (San Jos6). 



[Thryothorusl modesius Baird, Review Am. Birds, 1864, 122 (diagnosis). 



TiiryophUus modestm BAinj), Review Am. Birds, Sept., 1864, 131, part (San Jos6, 

 Costa Rica).— Lawrence, Ann. Lye. N. Y., ix, 1868, 92 (San Jos^, Guiatil, 

 and San Mateo, Costa Rica).— Fkantzius, Journ. fiir Orn., 1869, 291 (San 

 Jos6, Costa Rica).— Boucard, Proc. Zool. Soc. Lond., 1878, 51 (San Jos(5, 

 Cartago, and San Mateo, Costa Rica).— Salvin and Godman, Biol. Centr.- 

 Am., Aves, i, 1880, 83, part (Costa Rican localities and references). — 

 Sharpe, Cat. Birds Brit. Mus., vi, 1881, 209, part (San Jos6, Costa Rica).— 

 Zeledon, Cat. Aves de Costa Rica, 1882, 3; Proc. U. S. Nat. Mus., viii, 

 1885, 105 (Costa Rica); Anal. Mus. Nac. Costa Rica, i, 1887, 105 (Alajuela, 

 San Jos^, Navarro de Cartago, Cervantes de Cartago, and Pozo Azul de 

 Pirris, Costa Rica).— Nutting, Proc. TJ. S. Nat. Mus., v, 1883, 494 (Volcan 

 delrazu, Costa Rica), 499 (San Jos^, Costa Rica; song). — Cherhib, Proc. U. 

 S. Nat. Mus., xiv, 1891, 520 (Costa Rica; crit.); Auk, viii, 1891, 275 (San 

 Jos6, Costa Rica; habits; song; descr. young); Expl. Zool. Merid. Costa 

 Rica, 1893, 10 (Palmar, Lagarto, Boruca, TiSrraba, and Buenos Aires, s. w. 

 Costa Rica, 25 to 300 m. alt.). 



\_T:.rjophUu8] modestus Sclatek and Salvin, Nom. Av. Neotr., 1873, 6, part. 



ITmglodytesI modestus Gray, Hand-list, i, 1869, 190, no. 2594. 



Tlliryophilus'] modesius Ridgv,' ay , Proc. TJ. S. Nat. Mus., i, 1878, 253 (diagnosis). 



THRYOPHILUS MODESTUS ELUTUS Bangs. 

 PANAMA WHEN. 



Similar to T. in. modestus, but slightly duller and paler in color; 

 wing and bill av-e*aging longer, tail shorter." 



Adult ma/e.— Length (skins), 126-137 (132); Aving, 58.6-65 (61.4); 

 tail, 46-54.5 (50); exposed culmen, 17-18.5 (17.7); tarsus, 22-25 (23.8); 

 middle toe, 13.5-14.5 (14.2).* 



, Adult female.—LQn^th.{skxns), 122-129.5(124.6); wing, 55-58 (56.2); 

 tail, 44.6-45.5 (45); exposed culmen, 15.5-16.5 (16); tarsus, 23-24(23.5); 

 middle toe, 13.5-14.5 (14)." 



Isthmus of Panama, from line of Panama Railroad (Lion Hill Sta- 

 tion) north to Chiriqui (Boquete; Pedregal; Divala) and Veragua 

 (Bugaba). 



Tlinjothorus leucotis (not of Lafresnaye) Lawrence, Ann. Lye. N. Y., vii, 1862, 

 320 (Panama R. R.). 



«Mr. Bangs mentions the "rather smaller" size as one of the characters of this 

 ffir'.n; but I find that, taking the average of nine adult males of each, only the length 

 of the tail and middle toe i.i less than in 2\ m. modestus, all other measurements, 

 except that of tarsus, being greater. 



'' Nine specimens. 



c Three specimens. 



