364 



OHNITUOLOGY. 



Valley, we found the country along the western base of the Clover Mount- 

 ains to be similar to the upper portion of Ruby Valley in its general char- 

 acteristics. As along the eastern base of the East Humboldt range, the 

 streams from the main cafions were of considerable volume, while their 

 bordering shrubbery continued with them across the valley to the river. 

 The shrubbery along the main streams of the Upper Humboldt valley was 

 more extensive and vigorous, however, the cotton-woods and aspens being 

 more numerous, and constituting extensive groves, other spots being .occu- 

 pied by dense thickets of thorn-apple {Crataegus rivularis), wild-cherry 

 {PruHus andersonif), and willows {Salix, species). At this place the 

 following species were observed: — 



Tuiilus luigraiorias Common. 



Tiinliis s\v;iiiis()iii Common. 



Ite-iulns caU'iKliilii. Common. 



Trofjlodj'tes parknianni Common. 



Sitta (canadensis Common. 



Ili-linintliopliaga cclata Abundant. 



Mi'liniiitliopliafra Intescens. ..Rure. 



Dt'iid'O'ca iustiva Common. 



DiMiilrcPca audiiboui Abundant. 



Myiodioctfs ptisillus Abundant. 



Ariii)olis cedroriun. Common. 



Vireosylvia swainsoni Abundant. 



Laiiivirco solitaiius Common. 



I'yraiiga liidovieiana Common. 



Zonotricliia intermedia. Abundant. 



Melosi)iza fallax Abundant. 



Spizi'lla bi'eweri Abundant. 



Cyanospiza aiiiOBDa Common. 



Pipilo chlorurus Common. 



Scol«'C()]iliaguscyauoceplialns.Afci(«f/(iH/. 



Passerella schistacea Common. 



Corvns carnivorus Common. 



Plea lindsonica Common. 



Oontopiis richardsoni Common. 



Emi)idonax baiumondi Common. 



Cerylo alcyon . . . . .- . Rare. 



Colaptes inexicanns Common. 



Melaiii'ipes toiquatus Rare. 



Pieiis gaiiduei'i Rare. 



Otns wilsouianus Rare. 



Falco sparveiius Common. 



Falco coluinbarius Rare. 



Circus luidsonius Rart. 



Nisiis eooperi Rare. 



Nisus lusciis Common. 



Butco calurus Rare. 



liuteo swainsoni Rare. 



Aquila canailensis Rare, 



Hbiuogryphus aura Rare. 



Zenaedura caroliuensis Abundant, 



30. Trout Creek, Upper Humboldt Valley (September 16-20. 1868).— 

 This locality was very similar to the last, a large brook, with an ac^comjiany- 

 ing growth of shrubbery and thickets of small trees, extending across the 

 \alley from the Clover Mountains to the Humboldt River, the plain itself 

 being covered by the usual sage-brush plants; but the upper portion, next 

 to the lower foot-hills of the mountains, was clothed with rye-grass meadows, 

 interspersed with willow and aspen copses. In tliese rye-grass meadows 



