116 University of California Publications in Zoology. [Vou.5 
Oporornis tolmiei (Townsend). Tolmie Warbler. 
We failed to detect the presence of this warbler except as a 
migrant; I obtained no evidence whatever that the bird breeds 
anywhere in the region. The first was taken at Cushenbury 
springs, at the north base of the range, August 13, 1905. Sey- 
eral were noted in the brush at Caetus Flat, 6000 feet, August 
15. On the north side of Sugarloaf many were seen in the chin- 
quapin thickets at 8500 feet altitude, and down among the service- 
berry bushes and willow thickets at 7500 feet, August 19 to 22. 
The species was common in the vicinity of Bluff lake August 28 
to September 8. The nine specimens of the Tolmie warbler se- 
cured are all birds-of-the-year, in their first winter plumage. 
Geothlypis trichas arizela Oberholser. Pacifie Yellow-throat. 
A single immature male was taken and others heard in a small 
alfalfa patch at Johnston’s ranch on Cactus Flat, 6000 feet, 
August 16, 1905. These were doubtless migrants. 
Wilsonia pusilla chryseola Ridgway. 
Golden Pileolated Warbler. 
All of the thirteen specimens secured in the San Bernardino 
mountains, both breeding birds and migrants, are referable to 
this race. Golden pileolated warblers were common in willow 
thickets at the head of the South Fork of the Santa Ana, 8000 to 
8500 feet elevation, June 27 to 30, 1905. Males were then in full 
sone, and from their behavior we had no doubt that there were 
nests close at hand, although we failed to find any. This was 
the only place where we were sure this warbler was breeding. 
This is curious; for it makes the species in these mountains a 
strictly Boreal bird. Yet it breeds abundantly in the nettle and 
willow thickets in the lowlands (100 to 700 feet altitude) of Los 
Angeles county, certainly not higher than Upper Sonoran. I 
have carefully compared specimens from the two places and fail 
to see the slightest differences. 
As a migrant the species was distributed widely. On July 
31, 1905, the first transients were seen on the north side of Bear 
lake and a bird-of-the-year in complete winter plumage was taken. 
