102 PACIFIC COAST AVIFAUNA No. 12 
195. Sialia mexicana occidentalis J. K. Townsend 
WESTERN BLUEBIRD 
Sialia mexicana occidentalis (1) Linton, Condor, x1, 1909, p. 194. (2) Willett, Pac. Coast 
Avif., 7, 1912, p. 109. 
Rare migrant. C. B. Linton (7) secured an adult male on San Clemente 
Island in December 1908, and I saw a single bird on Santa Barbara as late as 
May 1, 1908. 
HYPOTHETICAL LIST 
ile Priocella glacialoides (A. Smith) 
SLENDER-BILLED I, ULMAR 
Fulmarus glacialoides Baird, Brewer and Ridgway, Water Birds N. Am., 11, 1884, p. 374. 
A skeleton was found on Catalina Island by J. G. Cooper, which he ascribed 
to this species. Systematic collecting off the islands should produce records of 
this bird, but the above instance of its occurrence is inconclusive. 
2. Oceanites oceanicus (Kuhl) 
WILson PETREL 
Oceanites oceanicus Cooper, Proc. Calif. Acad. Sci., 1v, 1868, p. 11. 
J. G. Cooper saw a white-rumped petrel near San Nicolas Island in July, 
1863, which he aseribed to this form. In all probability a case of mistaken iden- 
tity. 
3. Marila affinis (Kyton) 
LEessER Scaup Duck 
Aythya affinis Linton, Condor, x, 1908, p. 83. 
On San Clemente Island during February, 1907, C. B. Linton saw several 
ducks which he believed to be of this species. I personally believe it very likely 
that the species is occasionally found about the islands, but as Linton himself is 
not at all sure of his identification of the birds seen, I have thought it best to 
relegate the record to the hypothetical list. 
4. Branta canadensis, subsp. 
On Santa Cruz Island, April 25, 1911, a single goose of this group flew over 
A. van Rossem. He is of the opinion that it was B. c. hutchinsi, and it seems 
likely that such was the ease. 
5). Totanus flavipes (Gmelin) 
YELLOWLEGS 
C. C. Lamb informs me that while he and R. H. Beck were on the Coronados, 
April 11, 1908, the latter shot a yellowlegs which they believed was small enough 
