626 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



distinct bars except on under tail-coverts, even the latter sometimes 

 indistinctly l)arred/' 



Adult laale. -Length (skins), liO-UT (143); wing, 65-71(69.8); tail, 

 54,_60 (55.8): exposed culmen, 19-20 (19.6); tarsus, 24-27 (25.7); mid- 

 dle toe, 16-17.5 (16.8).'^ 



Adult female.^Length (skins), 133-147 (1^0); wing, 64-72 (66.3); 

 tail, 49-53 (51.5); exposed culmen, 17-20 (19); tarsus, 24-25 (24.8); 

 middle toe, 15-18 (16).^ 



Eastern Costa Rica (Pacuare; Jimenez; Limon; Rio Frio; Talamanca; 

 San Jose; Angostura; Tucurrique; Rio Sucio) and Nicaragua (Grey- 

 town; Los Siibalos; Rio Escondido). 



Thr[/op}iih(scaslaneus (not Tliryothorus custaneus Lawrence, 1861) Lawrence, Ann. 

 Lye. N. Y., ix, 1868, 93 (Pacuare and Angostura, Costa Rica). — Frantzius, 

 Journ. fiir Orn., 1869, 291 (Costa Rica). — Boucard, Proc. Zool. Soc. Lond., 

 1878, 51 (Costa Rica). — Salvin and Godman, Biol. Centr.-Am., Aves, i, 

 1880, 88, part (Pacuare, Angostura, and Tucurrique, Costa Rica). — Zeledon, 

 Cat. Aves de Costa Rica, 1882, 3.— Nutting, Proc. U. S. Nat. Mns., vi, 1884, 

 ,398 (Los Sabalos, Nicaragua). 



[Tln-j/ophUus'] castaneus Sclater and Salvin, Nom. Av. Neotr., 1873, 6, part 

 (Costa Rica). 



ThryophUui< costaricensis Bharpe, Cat. Birds Brit. Mus., vi, 1881, 217 (Costa Rica; 

 coll. Brit. Mus. ). — REicHENOwand Schalow, Journ. fiir Orn., 1884,428 (reprint 

 of orig. descr. ). — Zeledon, Proc. U. S. Nat. Mus., viii, 1885, 105; Anal. 

 Mus. Nac. Costa Rica, i, 1887, 105 (Jimenez and Rio Sucio, Costa Rica). — 

 Cherrie, Proc. U. S. Nat. Mus., xiv, 1891, 519 (Costa Rica; Los Silbalos, 

 Nicaragua; crit.). — Richmond, Proc. U. S. Nat. Mus., xvi, 1893, 482 (Grey- 

 town and Rio Escondido, Nicaragua; Rio Frio, Costa Rica; habits). — Salvin, 

 Bull. Brit. Orn. Club, no vi, 1893, p. xxxii (Nicaragua). 



T\hryopMhis] castaneus costaricensis Hellmayr, Verb. k. k. zool.-bot. Gesellsch. 

 Wien, 1901, 767, in text. 



THRYOPHILUS NIGRICAPILLUS SCHOTTII (Eaird). 

 SCHOTT'S WREN. 



Similar to T. n. nlqricapillus,'-' but back, etc., darker chestnut and 

 under parts more heavily or uniformly barred with black, the whole 

 throat narrowly barred, instead of immaculate white. 



Adult {sexes alike). — Pileum, nape, and sides of neck uniform black; 

 rest of upper parts bright chestnut, the wings and tail broadly barred 

 with black (the bars narrower and less distinct on wing-coverts); a very 

 narrow superciliary streak of white; suborbital region and upper 

 anterior portion of auricular region black; posterior and lower por- 

 tions of auricular region and malar region white, narrowly streaked 

 with black; chin and throat white, narrowly and irregularly barred 



« Occasionally there are more or less distinct dusky bars on abdomen or sides, 

 sometimes both; and there can be no question as to the intergradation of this form 

 with the Panama type. 



''Six specimens. 



•'See page 622. 



