60 The Wilson Bulletin — No. 103 



Another nest found the same day in a similar situation was not 

 yet completed. 



One specimen was collected, an adult male, taken May 26. This 

 bird has the back very slightly grayer than in typical V. b. belli 

 from eastern Kansas, the rump being decidedly brighter than the 

 back. In this and in length of tail (which measures 46.5 mm.) 

 this bird verges somewhat toward V. b. mediiis of southwestern 

 Texas. In other respects it agrees with true belli and there is no 

 hesitancy in allotting it to this form. 



54. Oporornis formosus (Wilson). — Kentucky Warbler. 

 Kentucky Warblers were fairly common in dense thickets. Birds 



were seen on May 24 and 26. None were taken. 



55. Geothlypis trichas bracTiidactyla (Swainson). — Northern Yel- 



low-throat. 

 A tolerably common species. Individuals were seen on May 23 

 and 27 near Minco, and a breeding female was taken on Bacon's 

 Ranch near Leal on May 31. This specimen (No. 1192, Coll. A. W.) 

 measures as follows: Wing 54.0 mm., tail 45.0 mm., exposed cul- 

 men 10.1 mm., and tarsus 20.2 mm. The wing and tail measure- 

 ments, though large, are within the maxima for this form. Com- 

 pared with G. t. occidentalis this specimen is distinctly darker 

 above. 



56. Ictcria xnrens virens (Linnaeus). — Yellow-breasted Chat. 

 Common; breeding. Chats frequented the thickets everywhere 



and from May 25 to 30 the males, under the excitement of the 

 breeding period, were in sight more often than is usual. Twice 

 birds were seen in open bushes singing loudly and posturing in 

 an odd manner. They swung first to one side and then to the 

 other, turning each time until the head and body hung down, a 

 performance that could not fail to attract attention. Another flew 

 up a few feet above a thicket and sang in the air, supporting him- 

 self with rapidly beating wings, while feet and tail hung loosely 

 and the bird swung jerkily from side to side. Two males, collected 

 on May 25, resemble typical virens, in size and in the extent of the 

 malar stripe, but are very slightly grayer above. These two meas- 

 ure as follows (in millimeters): 



Exposed 

 Wing tail culmen 



No. 1144 (Coll. A. W.) J' ad., May 25, 1905 77.0 74.0 14.8 



No. 1150 (Coll. A. W.) ^ ad.. May 25, 1905 78.0 77.0 14.0 



57. Mimus polyglotios leucopierus (Vigors). — Western Mocking- 



bird. 

 Common; breeding. Western Mockingbirds nested in the yards 

 in Minco and were distributed in suitable localities through the 



