1926] Swarth: Birds and Mammals from the Atlin Region 143 



1924, p. 368) strongly support the validity of the race. Compared 

 with series of specimens from more northern points in Alaska, assumed 

 to be typical hudsomiciis, they exhibit, conclusively as it seems to me, 

 the color characters ascribed to columbianus by Rhoads {loc. cit.) and 

 by Ridgway (1904, p. 414). 



Eegulus satrapa olivaceus Baird. "Western Golden-crowned Kinglet 

 Seen but once, a single bird near Atlin on May 29. 



Regulus calendula calendula (Linnaeus). Ruby-crowned Kinglet 



Seen at Carcross on May 24. Pound in small numbers throughout 

 the lowlands of the Atlin region during the summer and in rather 

 greater abundance after the southward migration began. The first 

 broods of young appeared on July 16. Seen daily diiring the early 

 part of September, and one bird was seen at Carcross on September 24. 

 Pour specimens were collected (nos. 44984-44987). 



Myadestes townsendi (Audubon). Townsend Solitaire 



Breeds in small numbers about Atlin, mostly on the partly open 

 mountain sides just below timber line. First seen on May 29, the last 

 September 1. One specimen collected, a juvenal male, June 30 

 (no. 44988). 



Hylocichla ustulata swainsoni (Tschudi). Olive-backed Thrush 



Breeds in fair abundance in the poplar and willow woods of the 

 lowlands. Arrived June 4 ; last seen August 29. Nine specimens were 

 collected (nos. 44989-44997). These, together M'ith others from pre- 

 vious expeditions to the Stikine and Skeena valleys, comprise a series 

 of forty-one specimens of olive-backed thrush from northern British 

 Columbia now in this museum. This series throughout exhibits the 

 grayish dorsal coloration described by Oberholser (1898, p. 304) as 

 the principal character of Hylocichla ustulata almMe. I would be 

 inclined to recognize that subspecies were it not for the fact that the 

 same coloration occurs in series from eastern localities, among the more 

 numerous olivaceous-backed birds that are supposed to represent 

 typical swainsom. The name cdnme may well rest in abeyance for 

 the time being until a better understanding is reached of the meaning 



