6oo Field Museum of Natural History — Zoology, Vol. IX. 



and northern Mexico; breeds from Idaho and Oregon northward, 

 accidental in Illinois. 



Special characters: General appearance of the Slate-colored Junco, 

 J. hyemalis, but differs in having the sides pale pinkish brown, the 

 back browner and the head, neck and chest black or blackish, not 

 grayish or slate color. 



Shufeldt's Junco must be considered an accidental straggler in 

 Illinois. There is a specimen of this form in the Field Museum col- 

 lection (No. 4959), an adult male taken by Mr. H. K. Coale at Wauke- 

 gan. 111., February 20, 1887. 



Mr. Wm. E. Praeger states: "On the i6th of December, 1892, 1 

 shot a specimen of Junco hyemalis shujeldti on the Illinois shore just 

 opposite this city (Keokuk, Iowa). It was with several other Juncos, 

 all as far as I could tell of the common variety." (The Auk, 1895, p. 

 85.) 



Mr. A .W. Butler (Birds of Indiana, 1897, p. 965) records a speci- 

 men taken at West Lafayette, Indiana, January 20, 1891. 



Genus AIMOPHILA Swainson. 



266. Aimophila aestivalis bachmanii (Aud.). 



Bachman's Sparrow. 



Peuccea ccstivalis bachmanii (Aud.), A. 0. U. Check List, 1895, p. 239. 



Distr.: Southeastern United States, from southern Iowa and 

 central Illinois south to Texas and the Gulf, and east to the Atlantic 

 coast ; from Maryland southward ; breeds nearly throughout its 

 range, except in Florida. 



Adult: Whole of upper plumage, chestnut rufous, the feathers 

 edged with ash gray, forming irregular streaks; a grayish buff super- 

 ciliary line; edge of wing at carpal joint, yellow; middle of belly, 

 whitish ; breast and sides of body, dull brownish ash ; no streaks on 

 under parts except occasionally on sides of breast; tail, much rounded, 

 the outer feathers being half an inch or more shorter than the middle 

 feathers. 



Sexes similar. 



Length, about 5.85 ; wing, 2.50; tail, 2.55; bill, .44. 



Bachman's Sparrow occurs in Illinois, in the southern and cen- 

 tral portion of the state, but has not been recorded from northern 

 Illinois or Wisconsin. Ridgway states: "Bachman's Sparrow first 

 came under my observation early in June, 187 1, when several were 

 seen and others heard about half way between Mount Carmel and 



