BREWSTER: BIRDS OF THE CAPE REGION, LOWER CALIFORNIA. 305 
and afterwards referred by Mr. Bryant to S. sula. I am informed by Mr. 
Ridgway, however, that the bird is really S. brewsteri, and that there is no 
valid record of the occurrence of either S. leucogastra or S. sula in Lower 
California. 
Mr. Frazar met with S. brewsteri only once —at San José del Cabo, on Sep- 
tember 10 — when several were seen flying past over the sea, and one, which 
came in over the sand-hills, was shot. This bird, although in worn plumage, 
is immature, the entire head and throat being grayish brown, and the under- 
parts posterior to the breast mixed white and grayish brown. ; 
Colonel Goss, by whom the species was first distinguished and named, found 
about seven hundred individuals breeding on San Pedro Martir Isle during 
the latter half of March, 1888, and gives the following description! of their 
nesting habits and eggs: — 
“The birds were not wild, but their nesting places as a whole were not in as ex- 
posed situations as those of the Blue-footed; they seemed to prefer the shelves and 
niches on the sides of the rocks. They lay two eggs, and in all cases collect a few 
sticks, seaweed, and often old wing or tail-feathers ; these are generally placed ina 
circle to fit the body, witha view, I think, to keep the eggs that lie upon the rock 
from rolling out. There is but little material on or about the isle out of which a 
nest can be made. 
“ The birds must commence laying as early as the 10th of February, for I found 
in many cases young birds from half to two thirds grown — white, downy little fel- 
lows with deep bluish black skins — that, in places where they can, wander about 
regardless of the nests where they were hatched. Average -measurement of 
17 sets of their eggs, 2.44 x 1.60. In color and form, as well as in size, they are 
similar to the eggs of the Blue-footed, in fact so near alike that when placed 
together they cannot be separated with any feeling of certainty ; therefore in col- 
lecting I was careful to mark each set before they left my hands.” 
In 1889 Mr. Townsend obtained two specimens on the Georges Islands, where 
he found the species breeding in abundance.? It also nests on Benedicto and 
Socorro Islands.® 
There can be little doubt that the Blue-footed Gannet (S. nebouxii), which 
breeds numerously on the islands of San Pedro Martir and Tiburon on the 
eastern side of the Gulf of California, visits the waters about the southern 
extremity of the Peninsula more or less frequently, but there is no present 
evidence to show that this is actually the case. 
1 Auk, V. 1888, 243. 
2 Proc. U. S. Nat. Mus., XIII. 1890, 138. 
8 Anthony, Osprey, III. 1898, 4-6. 
