128 NORTH AMERICAN FAUNA. (No. 16. 
104. Lanius ludovicianus excubitorides. White-rumped Shrike. 
One seen at Gazelle, on the west side of Shasta Valley, August 31, 
by Vernon Bailey, and one in Shasta Valley September 18 by W. H. 
Osgood. Rather common in Shasta Valley in July, 1899 (W. K. Fisher). 
105. Vireo solitarius cassini. Cassin Vireo. 
Fairly common along the lower border of the Shasta fir forest at 
Wagon Camp, where two or three were obtained the latter part of July, 
and where a nest containing one egg and one young was found by John 
H. Sage July 31. The nest was in a clump of buek-brush (Ceanothus 
velntinus) only 3 feet above the ground, in open chaparral, near the edge 
of the Shasta fir woods. 
106. Vireo gilvus swainsoni, Western Warbling Vireo. 
Recorded by C. H. Townsend as ‘found at rare intervals in midsum- 
mer about the base of Shasta.” A vireo heard by us several times at 
Sisson was probably this species. Walter K, Fisher found it at Edge- 
wood, among the bushes along Shasta River, where he secured a 
specimen July 19, 1899. 
107. Helminthophila rubricapilla gutturalis. Calaveras Warbler. 
Common in the chaparral at Wagon Camp, where several specimens 
were collected the last half of July. Later the species was seen with 
other warblers in the trees higher up on the mountain. 
108. Helminthophila celata lutescens. Lutescent Warbler. 
Fairly common and apparently breeding at Wagon Camp, in the 
lower edge of the Shasta firs, where two were collected July 20. One 
was shot in the alpine hemlocks on Squaw Creek August 6 by Vernon 
Bailey. 
109. Dendroica estiva. Yellow Warbler. 
Seen at Sisson, the middle of July, by Miss Merriam. The only ore 
seen on the mountain was shot in the chaparral uear the edge of the fir 
forest at Wagon Camp July 29 by John H. Sage. Common in bushes 
along Shasta River in Shasta Valley (W. K. Fisher). 
110. Dendroica auduboni. Audubon Warbler. 
Abundant throughout the forest region of Shasta, from timberline 
down to the lower edge of the Canadian zone. At Wagon Camp Miss 
Merriam saw them feeding fullgrown young July 18 and August 1. In 
August and September they were seen daily at our camp in the alpine 
hemlocks, often in mixed flocks of chickadees and other birds. When 
we left Wagon Camp, September 25, they were still common there. 
