226 University of Calif orma Publicaiions in Zoology [Vol. 24 



Vancouver Island. A northern race of this species has been designated 

 by Bishop (1900&, p. 116) as Contopus richardsmii saturatus. Certain 

 of the characters ascribed to this race may be discerned in some of the 

 specimens from the several points indicated, but these features seem 

 all to be too inconstant to serve in differentiating a northern subspecies. 



Empidonax difficilis diflScilis Baird. Western Flycatcher. 

 Seen nowhere along the upper Stikine, and the call note is sufS- 

 ciently loud and characteristic to render it unlikely that we should 

 have overlooked the bird, if present. One specimen, an immature male 

 (no. 39819) taken on Sergief Island, August 19. 



Empidonax trailli alnorum Brewster. Alder Flycatcher 

 Occurs in some numbers in suitable willow and alder thickets as 

 far down the river at least as Doch-da-on Creek. One heard calling 

 near Telegraph Creek, May 23. None seen at the Junction, but at 

 Sawmill Lake there were several pairs in the dense thickets bordering 

 the water. Here, at Glenora and at Doch-da-on Creek, our experi- 

 ence was the same. The birds could be heard calling, and occasionally 

 one could be seen in flight through the bushes, but their habitat was 

 so impenetrable and the birds were so shy and wary that they were 

 almost impossible to approach. 



After leaving Doch-da-on Creek the alder flycatcher was seen on 

 but one occasion. On Sergief Island, September 3, an immature 

 female was collected in a tangle of alders. The capture of this bird, 

 of course, is no proof that th» species breeds on that island, though 

 it has once been recorded from another point on the coast of south- 

 eastern Alaska under circumstances apparently indicative of nesting 

 (Swarth, 1911, p. 76). 



Two specimens were collected, an adult male near Telegraph Creek, 

 June 18 (no. 39820), and the young bird above mentioned (no. 39821). 

 The adult somewhat resembles Empidonux t. trailli in its large bill and 

 short wing, but in general coloration and in character of wing bars, 

 it is clearly alnorum. The young bird appears to be a typical example 

 of alnorum,. 



Empidonax hammondi (Xantus). Hammond Flycatcher 

 Abundant on the upper Stikine, where it is largely a bird of the 

 poplar woods. Near Telegraph Creek many were seen during the last 



