118 University of California Publications in Zoology [Vol. 30 



Nuttallornis borealis (Swainson). Olive-sided Flycatcher 



First seen at Carcross, May 26. Summer visitant to the Atlin 

 region in small numbers. An occasional pair was nesting at wide 

 intervals throughout the surrounding lowlands. In August, when 

 the southward migration had begun, the birds were more frequently 

 seen. Last noted August 28. One specimen was collected, an adult 

 male taken June 2 (no. 44756). 



Myiochanes richardsonii richardsonii (Swainson) 

 Western Wood Pewee 

 Present at Carcross, May 22. About Atlin the species was fairly 

 common throughout the lowlands. Last seen August 28. Three 

 specimens were collected, two adults and one juvenile (nos. 44757- 

 44759) . There are at hand twelve additional specimens from northern 

 localities, from the Skeena Eiver and the Stikine River, British 

 Columbia, and from the coast of southeastern Alaska, and judging 

 from this series I can see no justification for recognition of the sub- 

 species saturaius (of Bishop, 1900, p. 116). These birds are to my 

 eye indistinguishable from more southern specimens. 



Empidonax traillii alnorum Brewster. Alder Flycatcher 



Arrived at Atlin on June 12. Not common, but found in willow- 

 grown swamps throughout the lowlands. Last seen August 29. Three 

 specimens were collected, two adults and one immature in first winter 

 plumage (nos. 44760-44762)? 



Empidonax hammondii (Xantus). Hammond Flycatcher 



J^airly abundant in the lowlands of the Atlin region throughout 

 the summer. Arrived on June 1, and was last noted August 31. Three 

 specimens were collected (nos. 44763-44765), an adult male on June 3, 

 a female in winter plumage throughout on August 21, and a male 

 still in Juvenal plumage on August 24. 



Empidonax wrightii Baird. Wright Flycatcher 



Three specimens were collected (nos. 44766-44768) : an adult male 

 at 3000 feet altitude on Monarch Mountain, June 22, an adult female 



