BREWSTER: BIRDS OF THE CAPE REGION, LOWER CALIFORNIA. 15 
Gavia imber (Guny.). 
Loon. 
Colymbus torquatus Bena, Proc. U. S. Nat. Mus., VI. 1883, 852 (La Paz). 
Urinator imber Bryant, Proc. Calif. Acad. Sci., 2d ser., II. 1889, 250 (La Paz). 
Although the Loon is common in winter along the coast of California as far 
south as San Diego Bay the only authority for its oecurrence in any part of 
Lower California is Mr. Belding, who has recorded seeing two specimens at La 
Paz on January 27, 1883. The bird must be a rather rare visitor to this“ocal- 
ity, which probably represents about the southern limit of its winter wander- 
ings on the Pacific coast. 
Brachyramphus hypoleucus Xantvs. 
Xantus’s MURRELET. 
Brachyrhamphus hypoleucus Xantus, Proc. Acad. Nat. Sci. Phila., 1859, 299 (orig. 
descr.; type from Cape St. Lucas). Barrp, Jbid., 301 (Cape St. Lucas), 806 
(crit.; Cape St. Lucas). Covss, /bid., 1868, 64-66 (crit.; Cape St. Lucas). 
E1107, Illustr. New and Unfig. N. Amer. Birds, II. 1869, pl. 72 (descr. and 
figures type specimen from Cape St. Lucas). Ripeway, Proc. U.S. Nat. 
Mus., V. 1883, 534, footnote (Cape St. Lucas; San José). 
Brachyramphus hypoleucus Barrp, BReEweER, and Ripeway, Water Birds N. Amer., 
II. 1884, 502 (iris “ pale blue,” Xantrus, MS.; Cape St. Lucas). Bryant, Proc. 
Calif. Acad. Sci., 2d ser., II. 1889, 250 (Cape Region). 
This species was taken’ both at Cape St. Lucas and San José del Cabo by its 
discoverer, Mr. Xantus, in 1859, but rather curiously it does not seem to have 
been since observed near the southern extremity of Lower California, nor ever 
actually within the Gulf of California, where it is replaced by the closely-allied 
B. cravert, which appears to be strictly confined to the Gulf during the breeding 
season and practically so at all other times of the year. Mr. Anthony, who has 
found B. hypoleucus breeding on many of the islands off the Pacific Coast of 
Lower California north of Magdalena Bay, says that it “ begins nesting in late 
January, though I have found fresh eggs as late as early April. Late in Feb- 
ruary they may be seen at sea in family parties consisting of the parents and 
one or two downy young, which are taken to the water the first night, I think, 
after they are hatched. The young stay in company with the adults until late 
in the year.” He adds that among some seventy-five specimens of both sexes 
and all ages which he has taken between Santa Barbara Islands and Magdalena 
Bay only one has “suggested in any way the plumage known as cravert,” while 
concerning the identity of this single exception he was evidently in some 
doubt. 
1 Auk, XVII. 1900, 168, 169. 
