686 Field Museum of Natural History — Zoology, Vol. IX. 



Genus THRYOMANES Sclater. 



343. Thryomanes bewickii (Aud.). 



Bewick's Wren. 



Thryothorus bewickii (Aud.), A. 0. U. Check List, 1895, p. 298. 



Distr.: Eastern United States, chiefly south of latitude 40°, west 

 to the Plains, casually north to Pennsylvania, southern Ohio, northern 

 Indiana, northern Illinois, and Minnesota. 



Adult: Upper parts, dark cinnamon brown; back, without bars; 

 rump with concealed white spots; a whitish or grayish white super- 



Bewick's Wren. 



cilary stripe; outer tail feathers, broadly tipped and marked with gray- 

 ish white; middle tail feathers, dark brown, with numerous narrow 

 black bars; otUer web of first and second primaries, plain, without 

 bars or spots, the others dotted on the edges with pale buff; under 

 parts, grayish white, washed with brown on the flanks. Sexes simi- 

 lar. 



Length, 5.15; wing, 2.15; tail, 2.15; bill, .50. 



Bewick's Wren is common in southern Illinois, but occurs only 

 as a straggler in the northern portion of the state. Mr. Isaac E. 

 Hess informs me it is rare in the vicinity of Philo, Champaign Co., 

 Illinois, but he has found a pair breeding and took a nest and five 

 eggs on May 27, 1898. 



Mr. E. W. Nelson gives it as "A rare summer resident" in north- 

 eastern Illinois. He says: " A pair of these birds appeared in a vacant 

 lot in Chicago the first of June, 1876, and taking possession of a con- 



