30. THEYOPHILrS. 217 



outer web, the outermost rectrices with a few bars near tlie tips of 

 the inner web ; lores white ; fore jjart of eyelid and ear-coverts 

 black, the latter mottled on the lower edge with white tips to the 

 feathers, larger behind, and forming a patch behind the ear ; upper 

 and under edge of the eyelid and a very narrow superciliary streak 

 'above the eye white, the eyebrow slightly tinged with rufous ; 

 cheeks white, separated from the throat by a tolerably broad black 

 moustachial streak ; throat white, shading off into orange-rufous on 

 the fore neck, which gradually merges into the orange-chestnut of 

 the rest of the underparts ; sides of the body, flanks, and under 

 tail-coverts barred with blackish, more especially on the latter ; 

 axillaries like the breast, with faint blackish cross bars ; under winf- 

 coverts butty whitish, with dusky bases to the feathers ; quills brown 

 below, faintly edged with rufous-buff. Total length o-G inches, 

 culmen 0-9, wing 2-6, tail 2-3, tarsus 1. 



Yo u)i;/. Differs from the adult in being duller coloured, but 

 especially in having the feathers of the throat and fore neck edged 

 with dusky brown. (J/«s. Saluln ami Godman.) 



The Chestnut "Wren is an inhabitant of the State of Panama. 



a. Ad. sk. Lion Hill, Isthmus of J. McClellau, Esq. [C.]. 



Panama. 



16. Thryophilus costaricensis. 



Thryophilus castaneus (nee Lawr.), Laivr. Ann. Lye. Nat. Hist. N. Y. 

 ix. p. 93 ; Boucard, P. Z. S. 1878, p. 51. 



Adult. Very similar to T. castaneus, but deeper chestnut below, 

 without the black cross bands of the last-named species ; the white 

 on the throat confined to the throat itself and not extendiuo- to the 

 fore neck. Total length 5-5 inches, culmen 0-9, wing 2-S, tail 2-25 

 tarsus 1. 



The differences between the Costa-Pdcan and Panama races of 

 T. castaneus have already been pointed out by Messrs. Salvin and 

 Godman (Biol. Centr.-Amer., Aves, i. p. 88) ; 'they seem scarcely to 

 amount to specific distinctions, but render the birds recognizable as 

 races. 



The Costa-Piican Chestnut Wren replaces the foregoing species in 

 Costa Rica. 



a. Ad. sk. Costa Rica. 



M. A. Boucard [C.]. 



17. Thryophilus nigricapillus. 



Tkryothorus uigiicapillus, Sclatcr, P. Z. 6'. 18G0, p. 84 ; id. Cat. 



Anier. J5. p. 21. 

 Thryopliilua nigricapillus, Cass. Pr. PJiilad. Acad. 18G0, p. 193; 



Scl. ^- Sale. Xomencl. Ar. Xeotr. p. 7 ; iid. P. Z. S. 1879, p. 493 ; 



Sulv. cy Godin. Biol. Centr.-Amer., Aves, i. p. 89. 

 Thryophilus schottii, Baird, Pcvicw Amer. B. i. p. 133. 

 Troglodytes nigricapillus, Gray, Hand-l. B. i. p. 189, no. 2oG9. 



Adult male. General colour above chestnut, the least wing- 



