118 University of California Publications in Zoology [Vou 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 River 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 saturatus (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

Fairly 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