22 PACIFIC COAST AVIFAUNA No. 12 
ial Synthliboramphus antiquus (Gmelin) 
ANCIENT MURRELET 
Synthliboramphus antiquus (1) Linton, Condor, x, 1908, p. 125. (2) Linton, Condor, x1, 
1909, p. 102. (3) Linton, Condor, x, 1908, p. 198. (4) Osburn, Condor, x11, 1911, p. 
76. (5) Willett, Pac. Coast Avif., 7, 1912, p. 11. (6) Grinnell, Pac. Coast Avif., 11, 
E96, p: 18: 
Probably a regular winter visitant, though there are comparatively few 
records of its occurrence. C. B. Linton (2, 3) took several and saw the remains 
of others during November and December, 1908, at San Clemente. At Catalina, 
February 13, 1910, A. van Rossem (MS) obtained an individual that was feeding 
near several Rhinoceros Auklets. C. B. Linton (7) secured two near the shore of 
Santa Cruz Island, December 17 and 18, 1907. 
12: Brachyramphus hypoleucus Xantus 
Xantus MuRRELET 
Brachyramphus hypoleucus (1) Cooper, Proc. Calif. Acad. Sci., tv, 1868, p. 12. (2) Coo- 
per, Proc. Calif. Acad. Sci., 1v, 1870, p. 79. (3) Goss, Auk, 1, 1884, p. 396. (4) Bry- 
ant, Cat. Birds Lower Calif., 1890, p. 250. (5) Grinnell, Pasadena Acad. Sci., 1, 1897, 
p. 28. (6) Grinnell, Pasadena Acad. Sci., 1, 1898, p. 6. (7) Brewster, Birds Cape 
Region Lower Calif., 1902, p. 15. (8) Grinnell, Pac. Coast Avif., 38, 1902, p. 11. (9) 
Bailey, Handb. Birds West. U. S., 2d ed., 1904, p. 16. (10) Reed, N. Am. Birds’ 
Eggs, 1904, p. 16. (11) Linton, Condor, x, 1908, p. 125. (72) Lamb, Condor, x1, 1909, 
p. 8. (13) Wright, Condor, x1, 1909, p. 98. (14) Osburn, Condor, x1, 1909, p. 136. 
(15) Linton, Condor, x1, 1909, p. 193. (16) Willett, Condor, x11, 1910, p. 170. (17) 
Howell, Condor, x11, 1910, p. 184. (78) A. O. U. Check-list, 3d ed., 1910, p. 30. (19) 
Willett, Pac. Coast Avif., 7, 1912, p. 12. (20) Wright and Snyder, Condor, xv, 1913, 
pp. 86, 89. (21) van Rossem, Condor, xvi, 1915, p. 738. (22) Grinnell, Pac. Coast 
Avit., 115.1915; pig: 
Xantus Murrelet (23) Anthony, Bull. Cooper Orn. Club, 1, 1899, p. 102. (24) Peyton, 
Oologist, xxx, 1913, p. 78. 
Micruria hypoleuca (25) Anthony, Auk, xvil, 1900, p. 168. 
Oceurs in considerable numbers throughout the entire group of islands dur- 
ing the winter, and has been recorded breeding as far north as Anacapa. 
A. W. Anthony (23) was the first to discover this bird nesting on the Coro- 
nados; since then it seems to have increased steadily in numbers, until at 
present it may be classed as abundant on all four islands of the group. One 
or more wild house cats on south island, however, make sad inroads on the birds 
that venture to nest there. C. B. Linton (15) took one at Clemente in December, 
1908; H. Wright (19) has seen them there in summer, and believes that they 
were breeding. I consider this highly improbable, however, except that a few 
pairs may possibly be found on a large rock near the western end. 
J. G. Cooper (2) reported them as breeding sparingly on Santa Barbara 
Island in 1863, and H. Wright (20) found a single fresh egg in a hole on this 
island, July 2, 1912. They are surely destined to be driven from this locality, as 
have the auklets, by the cats. H. C. Burt (19) took a slightly incubated egg on 
Anacapa, May 15,1911, and during the spring of 1913, D. R. Dickey and A. van 
