92 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4TH SER. 
Thorough work in the more southerly portions of the ocean 
area we are considering would probably develop ‘Cape 
Pigeons” in considerable numbers after their breeding season. 
The color variations of this species are perhaps largely 
dichromatic, the dark-throated and dark-mantled birds repre- 
senting a dark phase and the pied-throated and pied-mantled 
birds a light phase. 
Pterodroma longirostris (Stejneger) : STEJNEGER’S PETREL 
Satvin—Cstrelata longirostris, 418. 
GopMaN—CEsirelata longirostris, xlv, 250. 
My identification of the specimens mentioned below is pro- 
visional ; for I have yet to examine the type of strelata longi- 
rostris Stejneger and a series of Procellaria leucoptera Gould 
from the type locality. 
This petrel, heretofore known only from Asiatic seas, was 
one of the finds of the Expedition. It was not encountered 
until the home voyage was nearly over, when five specimens 
were captured by Mr. R. H. Beck—a male on the 14th of 
November in latitude 33° 6’ N. and longitude 134° W. and 
two females and two males on the 19th of November in lati- 
tude 35° 40’ N. and longitude 133° 10 and 14’ W. In his 
notes, Mr. Gifford reports having seen one each ay on the 
15th, 16th, and 18th. 
Stejneger’s Petrel may prove to be an interhemisphere 
migrant, breeding south of the Equator and visiting the North 
Pacific during the exodus-migration. 
The five specimens are having a renewal that does not in- 
clude the primaries. These flight-feathers show but little 
wear, conveying the impression that a limited prenuptial moult 
is in progress. 
Mr. Gifford states in his notes that the unfeathered parts in 
life had the following colors: “Bill black; iris dark brown; 
orbital ring black; tarsus flax flower blue; inner toes same 
color on upper side, with black joints; outer toe and under 
side of middle one black; webs whitish with dark streakings.”’ 
