22 EXPLORATIONS AND SURVEYS WEST OF 100TH MERIDIAN. 



pared to that of the eastern Phoebe (Sayornis fuscus). A nest found 

 July 27 in a small willow, 3 feet from the ground, was a rather loose 

 structure, composed of grasses, with a lining of a few hairs. This con- 

 tained newly-hatched young. Eggs white, sprinkled with reddish- 

 brown. A comparison of the large series taken shows considerable 

 variation in size, especially as regards the bills. 



Empidonax hammondiij Bd. Hammond's Flycatcher. 



Two specimens only secured, one from near Beaver River, and the 

 other procured by Lieutenant Hoxie twenty-five miles from Fillrnore, 

 Utah. This gentleman stated that he saw numbers of these birds in a 

 cave in company with swallows. 



Empidonax obscurus, (Sw.) Wright's Flycatcher. 



Two specimens secured, one in Eastern Nevada, the other on a mount- 

 ain-side near Provo covered with scrub. Not common. 



Contopus boreaUs, (Sw.) Olive-sided Flycatcher. 



Seen upon several occasions in the heavy pine-timber of the Wah- 

 satch. Seems not to differ in coloration from eastern specimens. 



Contopus mrensr) (L.), var. richardsonii Sw. Short-legged Pewee. 

 Seen in same localities as preceding. Apparently rather common. 



