628 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



tail, 49-50.5 (49.7); exposed culmen, 17-19 (18); tarsus, 24; middle 

 toe, 15-15.5 (15.2)." 



Adu/t female.—hength (skins), 123-135 (127.7); wing-, 62-65 (64); 

 tail, 46.5^9 (47.5); exposed culmen, 17-18 (17.3); tarsus, 23-24(23.3); 

 middle toe, 15-16 (15.3).^ 



Veragua (Bugaba; Bibala) and southwestern Costa Rica (Pozo Azul 

 de Pirris; Pozo Azul de Pital; Lagarto; Buenos Aires; Palmar; 

 Cabagra; Pirris). 



Tlin/otJtorus semihadlus Salvin, Prof. Zool. Soc. Loncl., 1870, 181 (Bugaba,Vera- 

 gua; coll. Salvin and Godman), 



lTliryoj)hilun'] semibadins Sclater and Salvin, Nom. Av. Neotr., 1873, 7. 



TJirj/ophihi!^ semibadius Salvin and Godman, Biol. Centr.-Am. Aves, i, 1880, 88, 

 pi. 6, fig. 3.— Sharps, Cat. Birds Brit. Mus., vi, 1881, 216 (Bibala, Vera- 

 gvia). — Zeledon, Proc. U. S. Nat. Mus., viii, 1885, 105 (Costa Rica); Anal. 

 Mus. Nac. Costa Rica, i, 1887, 105 (Pozo Azul de Pirris, s. w. Costa Rica). — 

 Cherrie, Proc. U. S. Nat. Mus., xiv, 1891, 520 (crit); Expl. Zool. Val. Rio 

 Naranjo, 1893, 9 (Pozo Azul de Pital, s. w. Costa Rica); Expl. Zool. Merid. 

 Costa Rica, 1893, 11 (Palmar, Lagarto, Buenos Aires, and Cabagra, s. w. 

 Costa Rica, 25 to 600 m.; crit. ). 



THRYOPHILUS THORACICUS (Salvin). 

 STRIPED-BREASTED WREN. 



Adultly {sexes (dike). — Above plain brown (varying from olive-brown 

 to nearly mummy brown), duller and more olivaceous on pileum, 

 more rufescent (mummy brown to nearly russet-brown) on rump and 

 upper tail-coverts; back and scapular sometimes showing very faint 

 narrow bars of dusky; wrings and tail lighter and more grayish brown, 

 broadly barred with Idack; a narrow white superciliary stripe, mar- 

 gined above by a more or less distinct narrow line of black; auricular 

 region and suborbital region wdiite, streaked with black, the upper 

 portion of the former uniform black, forming a more or less broad 

 and distinct postocular stripe; sides of neck streaked black and white; 

 throat, chest, and upper breast white, broadly streaked with black, 

 the streaks narrower on throat; abdomen also sometimes similarly 

 but more irregularly streaked; sides and flanks brown (varying from 

 grayish olive to rusty brown or nearlj^ russet), usually immaculate, 

 but sometimes faintl}" and sparsely barred with dusky; under tail- 

 coverts pale rusty or pale brownish buffy, barred with blackish; max- 

 illa black or blackish brown, with paler tomia; mandible pale grayish 

 (bluish gray in life?); iris brown; legs and feet horn color or dusky 

 (in dried skins). 



Young. — Essentially like adults in coloration of upper parts, l)ut 

 under parts very diiferent, the parts which are conspicuoush" streaked 

 in adults being deep brownish gray, indistinctl}^ streaked with dull 



" Two specimens. ^ Three specimens. 



