NO. 1153. HE VISION OF TEE GENUS THR YOMANES—OBERHOLSER. 423 



II. Small, wing averaf^ing less than TyTt mm. — Continued. 

 15. Exposed oiilmen It-.ss than \~> mm. 

 a. UppiT parts grayish or smoky browu. 



5. Larger, crissnm heavily barred chaYienturuH. 



h'. Smaller, crissnm rather lightly barred cerroensis. 



a' . Upper parts reddish browu. 

 h. Very dark. 



c. Color above burut umber brown ^ bewickii. 



c'. Color above more sooty spiliirus. 



b' . Moderately dark. 



c. Darker and rather more sooty above neaophUus. 



c' . Lighter and more rufescent above drymacus. 



THRYOMANES BEWICKII BEWICKII (Audubon). 



Troglodytes beiciekii Audubon, Ornith. liiog., 1831, 1, p. 96. 



Thrijothorun bewicki Boxai'ARTe, (ieog. and Comp. List, 1838, p. 11. 



Tehnatodytex bewicki Cahanis, Mus. Hein., 1850, 1, p. 78. 



Thryothoriis bewickii var. bewickii IJaikd, Review Amer. Birds, 1864, 1, p. 126. 



ThryomancH bewicki Kidcway, Bull. Nntt. Orn. Club, 1877, II, p. 60. 



Tliryomanes bewicki a. bewicki Couks, Birds C<d. Vail., 1878, p. 169. 



Chars, suhsp. — Sii])ra clare rufo-brmiueus, infra albidus, hyi>oclion- 

 (Iriis dorsi colore lavatisj crisso nigro fasciato; stiiga alba superciliari 

 mediocri. 



MeufinremenU {IS specvne7is). — Wing, 51.5 to 5G.5 (average, 53.(5) mm.; 

 tail, 48 to 5G (average, 52) mm.; ex])Osed culmen, 12.5 to 14.5 (average, 

 13.4) mm.; bill I'rom nostril, 9 to 10 (average, 9.G) mm.; tarsus, 17 to 

 18.5 (average, 17. (i) mm.; middle toe with claw, 14 to 10.5 (average, 

 15. 2j mm. 



Type locality. — St. Francisville, Louisiana. 



Geographic distribution. — Southeastern United States, north, locally, 

 to central Pennsylvania, southern New Jersey, southern Ohio, southern 

 Michigan, and central Minnesota;' west to eastern Iowa, southeastern 

 Nebraska, eastern Kansas, and, in winter, central Texas. Strictly 

 migratory only along the northern border of its range, but apparently 

 not a summer resident in the far South. 



Description.— AdwM; No. 32288, U.S.N.M.; Macon, Georgia, Octo- 

 ber, 1848; Prof. Josei)h Le Conte. Upper parts uniform rich burnt 

 umber brown, the superior tail-coverts distinctly barred with black, 

 the feathers of the rump with concealed white spots. Wing quills 

 fuscous, the innermost secondaries barred with the color of the back, 

 outer webs of the other secondaries edged with burnt umber and 

 marked crosswise with darker brown; primaries indented externally 

 with ochraceous brown; wing-coverts like the back, the major series 

 with obsolete dark markings. Tail black, the central feathers with reg- 

 ular bars of prout's brown; all the remaining ones broadly tipped with 

 grayish white, and on terminal portion more or less barred externally 

 with the same color, this being most extensive on the outer rectrices, 

 decreasing with each succeeding pair until it is barely noticeable. 



'Trippe, Proc. Essex Inst., 1871, VI, p, 115. 



