158 NORTH AMERICAN FAUNA. [No. 7. 



134. Tardus ustulalus. Russet-backed Thrush. 



One seen at Olancha about the middle of May. 



135. Tardus aonalasckkce audiiboni, Audubon's Hermit Thrush. 



Breeds on Independence and Bishop creeks. 



136. Merula migratoria propiiiqua. Western Robin. 



Common summer resident along the eastern slope of the Sierra Nevada. 



137. Sialia arclica. Mountain Bluebird. 



Cominoin along- the eastern slope of the Sierra Nevada. 



