Vor. II, Pr. IT] LOOMIS—A REVIEW OF THE TUBINARES 175 
of specimens of the Black Petrel was secured, but was subse- 
quently destroyed in the Conflagration of April, 1906. 
Offshore in the vicinity of Point Pinos, California, Mr. Beck 
has taken Black Petrels at the end of May, in June, July, and 
August and during the first fortnight of September. On cer- 
tain days late in July and late in August he found them com- 
mon. 
As is well known, this species occurs off Southern California 
and breeds on Los Coronados and San Benito islands, Lower 
California. 
It is recalled that Prince Bonaparte in 1854 in his original 
account of this petrel attributed it to the fauna of California. 
After the lapse of more than sixty years, the extremes of its 
range and the character of its migrations still remain to be 
worked out. A female in worn plumage shot on July 25, 1905, 
in latitude 19° 40’ N. and longitude 112° W. was the last ex- 
ample secured by the Galapagos Expedition. Mr. C. H. 
Townsend has reported the capture of a single specimen on 
April 12, 1891, off Acapulco, Mexico.* It is not improbable, 
therefore, that the range of the Black Petrel in the south over- 
laps that of Markham’s Petrel. 
The Revilla Gigedo Expedition called at the San Benita 
Islands May 6, 1903, and Mr. Bunnell records in his diary of 
that day that he dug fifty of these petrels out of abandoned 
burrows of Cassin’s Auklets; that two petrels usually occupied 
a burrow, but sometimes only one; that egg-laying had not 
commenced ; that the petrels were very easy to kill, and leaked 
an orange-colored oil from the mouth and nose; that they were 
seen abroad only late at night; that their flight was bat-like. 
The Galapagos Expedition visited the San Benito Islands on 
the 14th, 15th, and 17th of July, 1905, but apparently failed to 
find eggs or downy young, although adult birds were found 
abundantly in old auklet burrows, and less numerously in 
crevices among rocks. 
The usual point-of-wing-formula in the Academy’s series of 
one hundred and fifty-one specimens is: primary 2>3>1>4. 
In some instances, the interscapulars, scapulars, and tertials of 
specimens in good plumage are indistinctly margined with 
brown. 
1 Bull. Mus. Comp. Zool., 1895, v. 27, ‘Pp. 126. 
