gg TEOGLODTTIDiE. 



9. Thryophilus semibadius. (Tab. VI. fig. 3.) 



Thryothorus semibadius, Salv. P. Z. S. 1870, p. 181 . 



Supra intense castaneus, fronte et capitis lateribus albis, plumis singulis nigro marginatis ; aliset caudanigris, 

 extus badio transfasciatis, teotricibus alarum minoribus albo transvittatis ; subtus albus, a pectore usque 

 ad caudam nigro transfasoiatus, gula pure alba, hypochondriis postiee oastaneo lavatis ; rostro corneo, 

 mandibula pallidiore ; pedibus nigricantibus. Long, tota 53, alse 2-6, caudse 2-0, rostri a rictu 0-9, tarsi 

 0-9. (Descr. maris ex Bugaba, in Statu Panamensi. Mus. nostr.) 



Hai. Panama, Bugaba, Bibala (ArcS ^). 



This Wren is only known to us from specimens sent to us from the neighbourhood 

 of Chiriqui by our collector Arce. The species is a very distinct one, allied to T. cas- 

 taneus and T. nigricapillus on the one hand, and T. jpUurostictus on the other— differing 

 from the former in having the top of the head of the same rich chestnut as the back, 

 and from the latter in the colour of the back and in the numerous cross bands of the 



under surface. 



B. Caput nigrum, dorsum castaneum. 



10. Thryophiliis castaneus. 



Thryothorus castaneus, Lawr. Ann. Lye. N. Y. vii. p. 321'; Scl. & Salv. P.Z. S. 1864, p. 346'; 



Salv. P.Z. S. 1867, p. 134'. 

 Thryophilus castaneus, Baird, Rev. Am. B. i. p. 133 '; Lawr. Ann. Lye. N. Y. is. p. 93 '. 

 Thryothorus nigricapillus ?, Lawr. Ann. Lye. N. Y. vii. p. 293 ' (nee Selater) . 



Supra leete castaneus, pileo toto cum capitis lateribus nigerrimis,,regione parotiea sericeo-alba ; aUs et cauda 

 nigris castaneo frequenter transfasciatis ; subtus gula et pectore antico albis, stria mystacali nigra, 

 abdomine toto castaneo, bypocbrondriis et crisso nigro transfasciatis ; rostro nigricanti-corneo, mandibula 

 pallidiore; pedibus fuscis. Long, tota 5-4, alse 2-8, caudse 2-3, rostri a rictu 1"1, tarsi I'l. (Descr. 

 maris ex Lion HiU, Panama. Mus. nostr.) 



Obs. In speciminibus ex Costa Eica fasciae abdominis nigrae carent, gula quoque nee pectus alba est. Forsan 

 species alia. 



Hob. Costa Rica, Pacuar, Angostura {F. Carmiol ^), Tucurriqui {Arc6) ; Pai^^ama, Santiago 

 de Veraguas {Arc6 ^), Lion Hill {WLeannan 1 2 4 6j_ 



This is a beautiful species allied to T. nigricapillus, but differing from it in having 

 the underparts deep chestnut instead of barred v^^ith black and white. Mr. Lawrence, 

 on first receiving specimens from M'Leannan, thought they might belong to T. nigri- 

 capillus ^ ; but he soon afterwards described the bird under its present name 1. All 

 the Panama birds we have seen have the underparts more or less barred with obsolete 

 black transverse bands. Costa-Eica specimens, on the other hand, so far as we know, 

 have the belly of a rich unbarred chestnut colour, and the white of the throat much 

 more restricted in extent. We thus have indications of the existence of two races of 

 this bird in Central America — the Panama bird, if our specimens indicate the normal 

 coloration, being somewhat intermediate in colour as well as in locality between the 

 one found in Costa Eica and that of Western Colombia and Ecuador which bears the 

 name T. nigricapillus. 



