78 University of California Publications in Zoology. (Vou. 5 
the bird flushing as the horses passed by. Many more western 
flyeatchers were noted along this caion at other times in June 
and July. 
The species was also evidently nesting along Foresee creek, 
at 5000 to 6000 feet elevation at the north base of San Ber- 
nardino peak, where I saw or heard several July 12, 1905.  Else- 
where in the region the species occurred, as I believe, only as a 
transient. It appeared on the upper Santa Ana in the willow 
thickets along the stream August 1, 1906. It was noted at Cush- 
enbury springs, at the north base of the mountains, August 10 
to 13, 1905; at Cactus Flat, August 16; on the north side of 
Sugarloaf at about 8000 feet elevation, August 22; at Saragossa 
springs, near Gold mountain, August 26; and at Bluff lake, 
August 28. Eight specimens were secured. 
Empidonax tyraillii traillii (Audubon). Traill Flycatcher. 
Tn only one loeality was the Traill flycatcher met with during 
the breeding season. This was along the Santa Ana river in the 
vicinity of Seven Oaks, where it was decidedly common and nest- 
ing in the alders and willow thickets from 4800 to 5200 feet ele- 
vation in June and July of each year. It was the only Empi- 
donax of that locality; in fact the breeding ranges of no two of 
the Empidonaces indigenous to the San Bernardino mountains 
overlapped at any point. 
Later in the summer the Traill flycatcher was found as a tran- 
sient at many points. It appeared on the upper Santa Ana, 
near the mouth of the South Fork, August 2, 1906. It was noted 
at Doble, August 7, 1905; at Cushenbury springs, August 10 to 
14; at Cactus Flat, August 15 to 17; at the north base of Sugar- 
loaf, August 20; and about Bluff lake, August 29 to September 
2. Hight examples were taken. 
Empidonax griseus Brewster. Gray Flycatcher. 
The Gray fiyeatcher proved to be the only Empidonax breed- 
ing in the upper Transition and Boreal zones of the region; and 
its abundance in favorable localities was remarkable. Around 
Bluff lake and on the south side of the upper Santa Ana towards 
San Gorgonio peak, there was scarcely an area of five acres with- 
