A KEVISION OF THE WltENS OF THE GENUS TIIRYO- 



MANES SCLATElt. 



By Harry C. Oheriiolser, 



Aaaistaut Biolotjwt, Department of .l(/ricultiire. 



Tlie present condition of the genera TUryothorns and Troglodytes is 

 manilestly unsatisfactory. Either these groups must be better defined 

 or no good reason can be found for recognizing more than one genus for 

 all of the wrens in question. A careful examination of very nearly ;dl 

 the species concerned seems to indicate that Tliryothorns and Trofjlo- 

 dyti's are capable of detinition if tlie West Indian sjiec'es' commonly 

 referred to the former be transferred to the latter, and if Tliryomanes 

 be jillowed to stand by itself. 7'liryomanes, imleed, is no more closely 

 related to ThryothoruH on the one hand than it is to Trogludytex on the 

 other, and should include Troglodytes inHulr/ris. Anorthiird, too, seems 

 sufficiently distinct to be considered of generic value, as the species 

 within its limits form a very homogeneous assemblage.- No trenchant 

 characters appear to separate Phevgopedius from Thryothorus, though 

 the former may profitably be retained as a subgeneric division. 



The four genera may becliaracteri/ed as follows: 



THRYOTHORUS. 



Bill stout, somewhat curved, and with a conspicuous subterminal 

 notch; angle of rami moderately acute; tarsi stout; tail five-sixths of 

 wing, or more, but never longer than wing. 



THRYOMANES. 



Bill slender, somewhat curved, compressed, slightly or not at all 

 notched; angle of rami very acute, this most apparent in tlu^ skull; 

 nasal fosste more linear than in Thryothorus or Troglodytes; tarsi slen- 

 der; tail at least niue-tenths of wing, sometimes longer than wing. 



' These should therefore now Htand as : Troglodytes viesolencuH (Sclater) ; Trofilodytea 

 ninxicus (Lawrence); Irot/lodi/tex uiartinicenni>i (Hdater); TroijlodiitcH rnfeHcenH (Law- 

 rence); I'rofilodijlrn f/uadrloupenHia (Cory), and Trof/IodylcH grcnadenHh (Lawrence), 



'The North American forms shonhl conseiinently ))e called: Aiiorthura hiemalis 

 (Vieillot), Anorthura hiemalin paoifica (Baird), and Anorthura alaHcensw (Baird). 



Proceedings U. S. National Museum, Vol. XXI— No. 1153. 



' 421 



