GEOLOGICAL SURVEY OF THE TERRITORIES. 



691 



Hal). — Missouri and central high plains westward to the Pacific and 

 south to Mexico. 

 Bear Eiver is the only locality wliere this species was observed. 



Contopiis borealis, Baird, (olive-sided fly -catcher :) 



Hab. — Rare on either coast. Not observed in the interior of the 

 United States, except to the north. Found in Greenland, (Reinhardt.) 



But three specimens of this rare species were observed : one at Ogden, 

 and the other two at Teton Caiion. 



Contopus richardsonii, Baird, (short-legged pewee :) 



Hab. — High central dry plains to the Pacific; Rio Grande Valley, 

 southward to Mexico. Labrador, (Audubon.) 



The present species is a western race of our common wood pewee, (0. 

 virens,) which it is scarcely distinguishable from except on comparison. 

 The most appreciable difl'ereuce is seen in the breast, which in Bichard- 

 sonii is nearly of a uniform olive brown, while in virem the middle line 

 of the breast is jialer than the sides. 



Empidonax jnmllus, Cab., (little fly-catcher :) 



No. 



62 

 76 



81 



82 



88 



100 



133 



Date. 



Measure- 

 ments. 



June 14, 

 June 15, 

 June 16, 

 June 16, 

 June 17, 

 June 18, 

 June 28, 



1872 

 1872 

 1872 

 1872 

 1872 

 1872 

 1872 



6fV X 9tV 



5^ xef 



6 X — 



«^TtJ X Jg: 

 6 X9i 



No. of nest. 



39 (16305) 



50 (16306) 



Locality. 



Ogden, Utah. 



Do. 



Do. 



Do. 



Do. 



Do. 

 Devil's Creek, Idaho. 



Hab. — High central i^lains to the Pacific ; fur countries ; southward 

 into Mexico. 



This western race of H. traillii was very common in the Salt Lake 

 Valley, where I collected seven specimens and three nests. They build 

 a neat, compact little nest, which they place in the fork of a rose or 

 other small bush, about five feet above the ground. It is composed of 

 fibrous grasses, flax, wool, and other soft substances, interwoven with a 

 few leaves of swamp-grass. It is a curious fact that this bird places all 



