198 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvii. 



the question warrants, and it is to be hoped that some little additional 

 liaht has thus been thrown upon a dark su])ject, although it may be 

 premised that the lines of distribution on the accompanying map are 

 in great measure tentative, while delineating at least in part what may 

 reasonablj^ be supposed to be the geographical homes of the various 

 forms. At least one conclusion of importance has been rendered 

 obvious by the present investigation, and this is the conspeciiic rela- 

 tionship of this group, throughout both South and Central America, 

 with tiie single exception of Troglodytes peninsular is:., which seems to 

 be a distinct species. 



The collection of the U. S. National Museum, including that of the 

 Biological Survey, has of course furnished the major part of the mate- 

 rial for this review, but for very substantial reenforcements the writer 

 is indebted to the authorities of the American Museum of Natural His- 

 tory, through Dr. J. A. Allen; to the Academy of Natural Sciences 

 of Philadelphia, through Mr. Witmer Stone; and to Mr. Outram 

 Bangs, of Boston, to whom further is due my privilege of describing 

 the following new genus: 



THRYORCHILUS/' new genus. 



Chars, gen. — Similar to Troglodytes., but tail of ten feathers, and 

 much abbreviated; feet proportionately much larger, reaching far 

 beyond the end of tail; coloration suggesting that of Ilenicorliina. 



Type. — Troglodytes hrowni Bangs. 



Range. — Same as that of the type species. 



THRYORCHILUS BROWNI (Bangs). 

 Troglodytes hrowni Bangs, Proc. New Eng. Zool. Club, III, 1902, p. 53. 



Type locality. — Volcan de Chiriqui, Panama, Colombia. 



Geographical distrihiition. — Volcan de Chiriqui, Panama, Coloml^ia. 



This remarkable wren, which Mr. Bangs has so recently made known 

 to science, is, by its combination of characters, apparently well worthy 

 of generic separation from Troglodytes. In superficial appearance it 

 resembles rather the species of Henicorhina., though in realit}^ not 

 very closeh^ allied. Its habits, according to Mr. Brown, are those of 

 a marsh wren.'' 



TROGLODYTES Vieillot. 



Troglodytes Vieillot, Hiat. Nat. Ois. Am. Sept., II, 1807, p. 52. 



Type. — Troglodytes aedon Vieillot. 



Range. — South and Central America, the West Indies, and North 

 America north to southern Canada. 



« Qpvov, juncus; opxi^oi^, regulus. 



6 Proc. New Eng. Zool. Club, III, 1902, p. 54. 



