64 University of California Publications in Zoology. [VoL 
me plain that it was the sap which collected in the newest (lowest) 
perforations which the bird was after, and appeared to sip. This 
single willow clump, among dozens of other unaffected ones at the 
end of the cienaga, was rendered conspicuous by all of its upper 
branches and stalks, above two to four feet from the ground, 
being dead, with the bark weathered off and the stems left bare 
and shining. This clump must have been worked upon for at 
least three years; for on several of the trunks, which were from 
three to five inches in diameter, there were three zones of borings, 
the latest one lowest. Just below each of these girdlings was a 
ring of sprouts. Of what advantage is it to the birds to confine 
their attention to one clump of willows until it is exhausted ? 
Of the seven specimens of this sapsucker obtained, four are 
adults, and these bear out well the characters I originally assigned 
to this race. As to the availability of the name daggetti, I have 
recently gone over the whole question again and proven to my 
own satisfaction that either the names notkensis and flaviventris 
are pure synonyms of ruber, or else ruber must be thrown out 
altogether as unidentifiable. In either case daggetti is the name 
to be reasonably employed for the southern race of the red- 
breasted sapsucker. 
Sphyrapicus thyroideus (Cassin). Williamson Sapsucker. 
The Williamson sapsucker appeared to be restricted to the 
Canadian zone and upper edge of Transition. We found it only 
amone the tamarack pines on the slopes and ridges of San Gor- 
gonio peak, and among the silver firs, tamarack and yellow pines 
around Bluff lake. In the former locality the species was com- 
mon for a woodpecker, especially around Dry lake, 9000 feet al- 
titude, where several nests were found. Tamarack pines were 
selected as nest trees, usually old ones with the core dead and 
rotten but with a live shell on the outside. In one found June 
22, 1905, there were four holes drilled one above the other about 
eighteen inches apart, and one of these holes contained three small 
young and two infertile eves. These eggs were preserved and 
are pure glossy white, measuring .98 & .67 and .99 & .69 inches. 
Later on in the same day another nest was found similarly loeated 
containing four half-fledged young. A nest with half-erown 
