THEYOTHOEUS, 91 



obtained by the French traveller Delattre. Both these names are now admitted to 

 apply to the same species. We have examined many specimens from the State of 

 Panama, and find them to vary slightly in the width of the black pectoral band and in 

 the number of the white cross bars of the underparts. In none, however, is the former 

 80 narrow or the latter so wide as in Mr. Wolf's representation of T. albigularis ^. 



Nothing has been recorded of the habits of the species, which appears to be strictly 

 confined to the low-lying hotter districts of the countries in which it occurs. Kemedios, 

 the elevation of which is a little over 2300 feet, is probably at the limit of its range in 

 altitude ; thence it descends to the level of the sea. 



2. Thryothorus atrigularis. (Tab. VI. fig. 4.) 



Thryothorus atrogularis, Salv. P. Z. S. 1864, p. 580'; Lawr. Ann. Lye. N. Y. ix. p. 92^ 

 Pheugopediws atrogularis"^, Lawr. Ann. Lye. N. Y. viii. p. 179\ 



Caataneus, pectore, gula et capitis lateribus nigris, his cum supercUiis obscure albo maoulatis ; alis et Cauda 

 fuscis, illis extus castaneis, bac aliquando septem fasciis pallidis transvittata ; teotricibus subcaudalibus et 

 campterio alari nigris albido transfasciatis ; rostro et pedibus nigris. Long, tota 5-3, alse 2-9, caudae 2'4, 

 rostri a rictu 0-85, tarsi 1-0. (Descr. exempl. ex Tucurriqui, Costa Eica. Mus. nostr.) 



Hab. NiCAEAGUA, Greytown (Holland^) 'i Costa Eica, Tucurriqui (ArcS^^). 



Three specimens of this Wren were included in a large collection of bird-skins 

 formed by Enrique Arce at Tucurriqui and elsewhere in Costa Eica. These are all the 

 examples that have come under our notice ; for Mr. Lawrence, in including the species 

 in his list of Costa-Eica birds, refers to Arce's specimens, none having at that time 

 reached the Smithsonian Institution, upon whose collections the list was founded. The 

 species is included with doubt in Mr. Lawrence's list of the collection of birds made 

 near Greytown by Mr. H. E. Holland^. 



T. atrigularis has no near allies that we are acquainted with, being a remarkably 

 distinct species, having an appearance recalling certain Formicariidae. Of its habits 

 nothing has been as yet recorded. 



b. Bostrum mediocre, gula nigro maculata. 



3. Thryothorus hyperythrus, sp. n. 



Thryothorus rutilus, Lawr. Ann. Lye. N. Y. vii. p. 320'; Salv. P. Z. S. 1867, p. 134', 1870, p. 181' 

 (nee VieiUot). 



Supra murino-fuscus, capite paulo rufescentiore, alis dorso concoloribus, cauda nigro regulariter transfasciata ; 

 capitis lateribus et gula nigris albo distinote variegatis ; subtus ferrugineus, pectore paulo rufescentiore, 

 crisBO albicante nigro transfasciato ; rostro et pedibus plumbeis. Long, tota 5*5, alse 2-3, caudae 2-0, rostri 

 a rictu 0'85, tarsi 0-9. (Descr. exempl. ex Paraiso, Panama. Mus. nostr.) 



Ohs. T. rutilo affinis, sed abdomine medio ferrugiaeo nee albo distinguendus. 



Hab. Panama, Bugaba, Boqueti, Chitra, Calovevora, Santa Fe, and Santiago (Arce ^ ^), 

 line of railway (M'Leannan^), Paraiso station (Hughes). 



This Wren is a near ally of Thryothorus rutilus, VieiUot, under which name it has 



12* 



