322 ORNITHOLOGY. 



as their favorite haunt. These .shrulw are of various .species, different ones 

 of which predominate in ditl't-rent locahties, the more common kinds beinjr 

 Cornus puhesrens, upon the berries of which many birds feed ahuost exclu- 

 sively in the foil, Samhucus glauca, Prunus demissa, Ribes irnguum, Abuts 

 incana, and, more rarely, Crateegus rivularis, while in many localities species 

 of Salix are also a common component of the thickets along the canon 

 streams.' The birds particularly characteristic of this section are: — 



1. Psaltriparu.s iilnnibciis. 5. ^lelospiza fallax. 



2. Geothlypis iiiaegillivrayi. C. Cyaiiocitta woodhousii, 



3. lled.ymeles iiielauocephalus. 7. Empidouax pusillus. 



4. Cyanospiza amujiia. 



In addition to those, Tunhis swainsoni," Galeoscoptes carolinom.i, Sefo- 

 pJiaga rutkilla,^ and Passerella schisiacea were found in the AYahsatch reg-ion. 



5. The Birds of the wooded river-valleys. — As a rule, the valleys of the 

 rivers in the Great Basin are destitute of trees, like the adjacent mesas ; but 

 in the " western depression " are two notable exceptions in the Truckee and 

 Carson Rivers, both of which are bordered along the lower portion of their 

 course by inviting groves or scattered clumps of large and beautiful cotton- 

 wood ti'ces (Populus monilifcra) and dense copses of a smaller sjiecies, 

 P. (r'ichocarpa. The buffalo-berry {Shcphcrdia argcntea) and willows {Salix, 

 species) form the greater part of the shrubbery, but they are associated 

 with numerous other woody plants. In the possession of these features 

 the lower portions of the valleys of both the above-named streams share 

 in common, but the timber along the latter is less regularly distributed, 

 although in places equally extensive. 



Localities so inviting as these being extremely rare and distant from 

 each other, it follows as a natural consequence that the birds are found 

 greatly multii)lled both in species and individuals in these restricted oases. 



'lu the East Ilumboklt Mountains, but more especially iu the Wahsatch, other 

 species, belongins to the Ixocky .^loinitain rej;ion, are added, the number being small 

 in the first-named range, but in the latter very considerable, and embracing several 

 eastern species. In the caQons of the Wahsatch, for instance, are found Bctula occi- 

 dentalin, Rhus aromatica, R. glabra, Acer fjrandidentatum, Negundo aceroidea, and Sam- 

 bucuii racevwsa. [See VVatsou, Botanical Report, j). .\xxvii.J 



* Found also as far west as the East Uumboldt Mountains, in September. 



^Noticed only in the lower portion of the canons, and more commonly in tho 

 valleys, as was also the case with (laleoncoptcs curoliiwniiiti. 



