756 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
chin slate-grayish), without white superciliary or supra-auricular 
stripe, and with sides and flanks white striped with slaty or blackish. 
Range.—Coasts and islands of northern Pacific Ocean, from Kuril 
Islands and Kamchatka (including Commander Islands) to eastern- 
most Aleutian Islands; southward in winter to Japan and southern 
California. (Two species.) 
KEY TO THE SPECIES OF SYNTHLIBORAMPHUS. 
a. Wing more than 130; middle toe 24-28; breeding plumage without crest, with chin, 
throat, and upper foreneck deep fuscous or clove brown, sides of neck white, 
no white over eye, and lower hindneck streaked with white. (Pacific coast, 
from California to Japan.).........-.-----+--- Synthliboramphus antiquus (p. 757). 
aa, Wing less than 180 (122.5-125.5); middle toe 22.5-23; breeding plumage with a 
frontal crest of slender elongated feathers; chin and upper half of throat slate- 
gray, the lower throat white, like rest of under parts; sides of neck black; a 
broad white stripe over eye; lower hindneck not streaked with white. (Japan; 
Korea)... .aseecssewecswars s Synthliboramphus wumizusume (extralimital).¢ 
@Uria wumizusume Temminck, Pl. Col., v, livr. 98, 1835, pl. 579 and text (coast 
of Korea and Japan).—Synthliborhamphus wurmizusume Coues, Proc. Ac. Nat. Sci. 
Phila., 1868, 58, fig. 4 (monogr.); Check List, 1873, no. 628; Ridgway, Nom. N. Am. 
Birds, 1881, no. 754.—[Synthliborhamphus] wurmizusume Coues, Key N. Am. Birds, 
1872, 344.—Mergulus wurmizusume Barrows, Proc. Bost. Soc. N. H., xix, 1877, 157 
(monogr.)._[ Anobapton (Synthliboramphus)] wumizusume Bonaparte, Compt. Rend., 
xlii, 1856, 774.—Synthliboramphus wumizusume Baird, Brewer, and Ridgway, Water 
Birds N. Am., ii, 1884, 505; Stejneger, Proc. U. S. Nat. Mus., ix, 1886, 524 (geogr. 
range); x, 1887, 482 (Idzu Islands, Japan); American Ornithologists’ Union, Check List, 
1886 (and 2d ed., 1895), no. 22.—S[ynthliboramphus] wumizusume Ridgway, Man. N. 
Am. Birds, 1887, 14.—Synthliborhamphus wumizusume Reichenbach, Vollist. Naturg. 
Végel, Natatores, 1845, pl. 4, fig. 31; Grant, Cat. Birds Brit. Mus., xxvi, 
1898, 598 (Japan)—Ura wumizusume Temminck and Schlegel, Fauna 
Japonica, Aves, 1845, 123, pl. 79.—Brachyrhamphus umizusume Blakiston and Pryer, 
Ibis, 1879, 210 (Hakodadi, Tokyo Bay and Shimoda, Japan).—Synthliborhamphus 
umizusume Coues, Check List, 2d ed., 1882, no. 865.—S[ynthliborhamphus] umizusume 
Coues, Key N. Am. Birds, 2d ed., 1884, 812.—Alca uwmizusume Rickett, Ibis, 1894, 
225 (Foochow, China).—Synthliboramphus temminckii Brandt, Bull. Ac. St. Petersb., 
ii, 1837, 347 (new name for Uria wumizusume Temminck).—Brachyrhamphus tem- 
minckii [Cabanis] Journ. fiir Orn., 1858, 448.—Brachyramphus temminckii Cassin, in 
Baird, Rep. Pacific R. R. Surv., ix, 1858, 916; Baird, Cat. N. Am. Birds, 1859, 
no. 737; Elliot, Illustr. New and Unfig. N. Am. Birds, pt. 6, 1867 (vol. ii), pl. 71 
and text.—Alca temminckii Schlegel, Mus. Pays-Bas, vi, no. 33 (Urinatores), 1867, 22. 
Adult in breeding plumage (sexes alike).—Forehead, center of crown, hindneck, 
and sides of neck black, this color continued from sides of neck along sides to and 
including flanks, the hindneck sometimes with a few white streaks; forepart of crown 
with a loose crest of slender, much elongated, slightly decurved feathers, inclining 
backward toward occuput; a broad white stripe originating on each side of crest and 
extending backward to and including occuput, where the two of opposite sides are 
confluent; loral, orbital, auricular, and malar regions and upper half of throat uniform 
velvety slate-gray, with a truncated posterior outline on throat; remaining under 
parts immaculate white; upper parts, except as described, plain slate-grayish, the 
anterior lesser wing-coverts, remiges, and tail dusky; bill yellowish (in dried skins), 
the culmen black; iris dark brown; legs and feet dusky yellowish (in dried skins). 
