152 CALIFORNIA ACADEMY OF SCIENCES _ [Proc. 4mm Serr. 
When homeward-bound, it was last chronicled by him on 
October 22, 1906, in latitude 17° 53’ N., longitude 114° 45° 
W. During June, 1903, while on the Revilla Gigedo Expedi- 
tion, Mr. Beck obtained numerous specimens at Banderas Bay, 
Mexico. In the Galapagos Archipelago, Mr. Gifford records 
the species for every month of the year except November, De- 
cember, and March. Messrs. Snodgrass and Heller report’ it 
for December, and Mr. Ridgway lists? two specimens taken by 
Mr. C. H. Townsend on March 1 in latitude 4° 22’ N., longi- 
tude 82° 3’ W. During the Academy's cruise south of the 
archipelago, in June, 1906, it was met with daily. Individuals 
were observed on the 11th in latitude 4° 25’ S., longitude 93° 
30’ W., the most southerly bird-watching station of the Expe- 
dition. Capt. R. Paefsler has logged its occurrence in latitude 
1724S) joneitude 74> Wi. june 6 19108 Se 725 Save, 
Reb. £5, 1912520716) S270 4 Wey Octal7. 1913: 
From the foregoing facts it would appear that the range of 
the Galapagos Petrel extends over the intertropical seas con- 
tiguous to the American west-coast. 
In substance Mr. Gifford’s Galapagos notes are as follows: 
These storm petrels nest in holes in the cliffs and among the 
lava blocks on the south side of Tower Island, the rookery 
extending along the face of the cliffs for three quarters of a 
mile and inland for about two hundred yards. On September 
15 Mr. Beck visited the rookery and found an addled egg and 
saw one of these petrels enter a nesting hole.* The genital 
organs of the specimens taken were medium-sized. In speci-- 
mens obtained near Albemarle Island in April these organs. 
were enlarged, indicating the advent of the egg-laying season.. 
These petrels were also observed in the vicinity of Abingdon, 
Barrington, Bindloe, Brattle, Charles, Chatham, Cowley, Cul-. 
pepper, Daphne, Hood, Indefatigable, James, Narborough, 
and Wenman islands, but were not numerous, except between 
the Equator and Tower Island on the 13th and 14th of Sep- 
tember and northwest of Abingdon Island on the 23rd. There 
“Ta Broce Wash. Acad! (Sel w. Siip oda evi ae Gu a a ee 
?Proc. U. S. Nat. Mus., v. 19, pp. 657, 65 
8. 
8J. £. O., 1913, v. 61, pp. 42, 49; 1914, v. 62, p. 273. 
*Cf. Condor, v. 4, 99. 
