362 OENITHOLOGY. 



On the foot-hills of the range, ou each side the canon, were a few- 

 scattered mountain mahogany and cedar trees, and among these we found 

 Helminthophaga virginice, Contopiis boreaJis, Empidonax ohseiirus, and Picicorvus 

 columhianus. 



A decided step toward a different faunal district, besides the addition 

 of Dolichonyx oryzivorus, Podiceps cristatus, Turdus swainsoni^ Dendraica 

 townsendi, D. occidentalis, Loxia americana, L. leucoptera, Empidonax liam- 

 mondi, and Contopus borealis to our list of birds, was the circumstance that 

 the large white-tailed hare, Lepiis campestris, replaced the black-tailed L. 

 callotis, which, up to this time, had been the only one observed. 



Species of general distribution observed at this locality were as follows: 



KhiiioftrjpUus aura Common. 



A(inila canadensis Common. 



Bnteo swainsoiii Common. 



Aichibuteosaiicti-jobaunis. . . Common. 



Hiniiulo liorreorum Common. 



Scolccophaguscyaaocephaliis.^6MHrfa»i. 



Colaptes raexicauus . . Common. 



Corvus carnivorus Common. 



CoUurio exciibitoroides Common. Zeusedura caroliuensis Abundant. 



27. " CdDip 22," liiihi/ Valley (September 4-5, 1868). — The surroundings 

 of this camp Avere much the same as those at the Overland Ranche, except 

 that the valley was uncultivated, while the foot-hills were higher ; besides, 

 we had left the marshes behind. The stream was bordered with willows 

 entirely across the valley, while in a marshy spot stood quite an extensive 

 grove of very tall willows and alders. In the latter, considerable numbers 

 of Loxia americana and L. leucoptera were found, besides Dendrceca cestiva, 

 Empidonax pusillus, and Contopus richardsoni, while Gallmago ivilsoni was 

 abundant on marshy ground, where was also a small black Rail, supposed 

 to be Porzana jamaicensis. In the sage-brush were CoUurio excubitoroides, 

 Oreoscoptes montanuf;, Spizella breweri, Pooecetes confinis, and Chondestes 

 grammaca, while along the stream we foimd Passereulus alaudinus and 

 Melospiza fallax. In an elevated park, at the head of the main canon in 

 the foot-hills, the following species were observed : Empidonax hammondi, 

 Contopus richardsoni, Chrysomitris pinus, Canace obscura, Ceryle alcyon, 

 Colaptes mexicanus, Buteo stvainsoni, Falco sparverius, Zencedura carolinensis, 

 Selasphonts platycercus, Pooecetes confinis, Chondestes grammaca, Spizella 

 breweri, and Pipilo chlorurus. 



