4*.) 2 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



The following citations I am unable to properly place, on account 

 of the absence of specimens from the localities referred to. Probabl}^ 

 they all pertain to T. p. 'palustris: 



Troglodytes palmirh Read, Proc. Ac. Nat. Sci. Phila., vi, 1853, 399 (Ohio). 

 Cistothorus palustris WHEATON,0hio Agric. Rep., 1860, 365 (Ohio). — McIlwraith, 



Proc. Essex Inst., v, 1866, 87 (Hamilton, Ontario); Birds Ontario, 1884, 



397 (breeding throughout). 

 Telmatodytes palustris Wheaton, Rep. Birds Ohio, 1879, 232. 



TELMATODYTES PALUSTRIS ILIACUS Ridgway. 

 PRAIRIE MARSH WREN. 



Similar to T. jp. palustris, but slightly larger and with the coloration 

 much more rufescent, the brown of upper parts russet-brown to 

 cinnamon-brown or russet, the flanks conspicuously deep cinnamon- 

 bufl' or cinnamon. 



Adult w?a/e.— Length (skins), 110-127.5 (116.1); wing, 49.5-56 

 (52.3); tail, 40.5-46.5 (43.6); exposed cidmen, 13-15.5 (14.4); tarsus, 

 19.5-22 (20.6); middle toe, 11.5-13.5 (12.4). « 



Adult female.— hQw^ih (skins), 97.5-119.5 (109); wing, 46.5-53.5 

 (49.6); tail, 37-45.5 (40.2); exposed culmen, 13-15.5 (13.8); tarsus, 

 18-20.5 (19.3); middle toe, 11.5-12.5 (12.1).^ 



« Fifteen specimens. 

 b Twenty specimens. 



Specimens from different geographic areas compare in average measurements as 

 follows: 



Although the specimens from Jalisco average decidedly more in length of wing 

 and tail than those from eastern Mexico and the United States they are precisely 

 the same in coloration. Po.^sil)ly they are migrants from the extreme western 

 (more elevated) portions of the Great Plains region, where the dimensions may 

 increase to approximately those of the Rocky Mountain and Great Basin form {T.j). 

 plesius) without being accompanied by any change in coloration. 



