178 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4TH Ser. 
migrants on April 30, 1915.1. Mr. Lorquin’s San Pedro speci- 
men,” taken in August, still remains the most southerly capture, 
evidencing how little has been done in the study of migration 
on the ocean off Southern California. 
In twenty-five June and July specimens the second primary 
is generally the longest, the third nearly equal to it, and the 
fourth generally decidedly longer than the first, the dominant 
point-of-wing-formula being: primary 2>3>4>1. In a Sep- 
tember and two October specimens, apparently birds-of-the- 
year, the first primary is decidedly longer than the fourth. In 
another October specimen, also apparently a bird-of-the-year, 
the first and fourth primaries are nearly equal. 
The specimens at hand, mostly from breeding grounds, show 
no exceptional features of moult. 
Notge.—Since part VI was completed, Mr. C. I. Clay has 
reported the discovery of small breeding colonies in 1916 at 
Whaler Island, near Crescent City, Del Norte County, and 
Sugar Loaf Rock, Trinidad, Humboldt County, California,’ 
also, Mr. L. E. Wyman has reported finding nine of these 
petrels “dead on the beach in the vicinity of the village of 
Sunset Beach, Orange County,” California, between May 15 
and June 1, 1916.* 
+O. P. Silliman, Condor, v. 204. 
2 Cooper, Proc. ay Acad. Sai, re 4, p. 10; Water Birds N. A., v. 2, p. 414. 
8 Condor, v. 18, p. 2 
“ Condor, v. 19, He 141. 
