64 EXPLORATIONS AND SURVEYS WEST OF 100TH MERIDIAN. 



ALAUDID^E (the Larks). 

 42. Eremopliila alpestris, (Forst.), var. chrysolama, Wagl. 



Quite numerous on the plains in the neighborhood of the city. Has 

 a rather feeble, but pleasing, warbling song at this season, which the 

 birds uttered while perched on a fence-rail or from the ground. 



ICTERIDJE (the Orioles). 

 43. Molothrus pecoris, (Gm.) Cow-Blackbird. 



Seen in small flocks of six or seven during my whole stay in the 

 vicinity. 



44. Agcelceus phcenicens, (L.) Eed-winged Blackbird. 



Both sexes common May 6. By the 17th a few pairs had selected 

 the sites for their nests, and were about to build. A female taken here 

 has a conspicuous bright-red shoulder-patch, streaked slightly with 

 black and bordered with yellowish- white. 



45. Xantlwcepliahis icterocephaliis, (Bon.) Yellow r -headed Blackbird. 



Observed by Dr. Rothrock as quite common on the edges of swamps 

 and in the cottonwoods, June 3. 



