44 PROCEEDINGS OF THE ACADEMY OF [1893. 



display the arts indicative of the breeding period seen in other 

 birds, not a call note or other sign of recognition being detected 

 daring my extended acquaintance with them. 



146. Chaetura vauxii. Vaux's Swift. 



Arrived April 11th, at Nisqually and May 13th at Goldstream, 

 where they were an abundant migrant, associating at times with C. 

 niger. Seen at Lac La Hache, July 1st. 



147. Selasphorus rufus. Rufous Humming-bird. 



Incredibly numerous on the coast during April migration ; nest- 

 ing at Nisqually while night frosts still lingered and mercury aver- 

 aged 45° to 50° during the day. Scarcely less common in many 

 parts of the interior districts and found on the summits of highest 

 mountains, including the Rockies. Nests with eggs nearly hatched 

 found April 18th. 



*148. Stellula calliope. Calliope Humming-bird. 



A few very small " hummers" frequenting the interior and south- 

 ern Rocky Mountain districts were probably S. calliope. 



149. Tyrannus tyrannus. Kingbird. 

 Abundant in the interior. 



150. Tyrannus verticalis. Arkansas Kingbird. 



Finds its northern limit a few miles south of Clinton. Ranges 

 west in the breeding season to the Selkirk Mountains. I did not 

 find it on the coast. 



151. Sayornis saya. Say's Flycatcher. 



Not common. Same distribution as preceding species. 



152. Contopus borealis. Olive-sided Flycatcher. 



Breeding at high altitudes in the east Cascade and Rocky Moun- 

 tain districts. 



153. Contopus richardsonii. Western Wood Pewee. 



Not abundant, but represented in all localities visited. 



154. Empidonax difficilis. Western Flycatcher. 



Mr. Streator says that this species, while " common in the coast 

 region," is " more so in the interior." Not only is this disproved by 

 the specimens taken by him but by my own skins, all of which 

 came from west of the Cascades. 



