rarely seen flying in the vicinity of their nesting island during the
day; the bird that is on the nest will remain until removed by hand.
Data.--Pumpkin Is., Maine, June 22, 1893. Single egg; nest of a few
grasses at the end of a burrow dug in the bank. Collector, J. Lefavour.

106.1 GUADALUPE PETREL. _Oceanodroma macrodactyla._

This species, which is very similar to the preceding, except for a
longer and more deeply forked tail, breeds on Guadalupe Is. Their eggs
are white very minutely wreathed with reddish brown; they are, however,
nearly always nest stained to an uneven brownish color. Data.--Guadalupe
Is., Lower California, March 24, 1897. Single egg laid on a few oak
leaves and pine needles at the end of a three foot burrow. Size of egg
1.40 x 1.00. Collector, A. W. Anthony.

[Illustration 071: White.]
[Illustration: Kaeding's Petrel. Leach's Petrel. Guadalupe Petrel.]
[Illustration: White, nest stained.]
[Illustration: right hand border.]

Page 70

107. BLACK PETREL. _Oceanodroma melania._

Range.--South Pacific, from southern California southward, breeding on
the small islands on both coasts of Lower California. They are similar
to the Leach's Petrel except that the rump is blackish. Data.--San
Benito Is., Lower California, July 23, 1896. White egg laid on bare
ground at the end of three foot burrow. Size 1.40 x 1. Collector, A. W.
Anthony.

108. ASHY PETREL. _Oceanodroma homochroa._

Range.--California coast, breeding on the Farallones and Santa Barbara
Islands.

This species, while not common, nests in all manner of localities on the
Farallones, concealing their eggs under any rock or in any crevice that
may attract their fancy. Their single white egg is only faintly if at
all wreathed with fine dust-like specks of reddish brown. Size 1.15 x
.86. Data.--Farallone Is., California, June 12, 1895. Egg laid on sand
in crevice at the base of a stone wall; well concealed. Collector,
Chester Barlow.

108.1. SOCORRO PETREL. _Oceanodroma socorroensis._

Breeds on Socorro, San Benito and Coronado Islands, placing its eggs at
the end of burrow. Data.--San Benito Is., Lower California, July 12,
1897. Single egg at the end of a burrow 3 feet in length. Egg pure white
very finely wreathed with pale reddish brown. Size 1.15 x .87.
Collector, A. W. Anthony.

[Illustration 072: Black Petrel. Ashy Petrel.]
[Illustration: deco.]
[Illustration: left hand margin.]

Page 71

109. WILSON'S PETREL. _Oceanit