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 wliite. (Pacific coast, 



from California to Japan.) Synthliboramphus antiquus (p. 757). 



aa. Wing less than 130 (122.5-125.5); ncdddle toe 22.5-23; breeding plumage with a 

 frontal crest of slender elongated feathers; chin and ui)per half of throat slato- 

 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.) Synthliboramplius wumizusume (extralimital) a 



o Uria wumizusume Temminck, PI. Col., v, livr. 98, 1835, pi. 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, Norn. N. Am. 

 Birds, 1881, no. 754. — [Synthliborhamphus] wurmizusume Coues, Key N. Am. Birds, 

 1872, 344. — Mergulus ivurmizusume 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, Jajjan); American Ornithologists' Union, Check IJst, 

 1886 (and 2d ed., 1895), no. 22. — S[ynthliboramphus] tvumizusume Ridgway, Man. N. 

 Am. Birds, 1887, 14. — Synthliborhamphus wumizusume Reichenbach, Vollst. Naturg. 

 Vogel, Natatores, 1845, pi. 4, fig. 31; Grant, Cat. Birds Brit. Mus., xxvi, 

 1898, 598 (Japan). — Uria umizusume Temminck and Schlegel, Fauna 

 Japonica, Aves, 1845, 123, pi. 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 umizusume 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. fur Orn., 1858, 448. — Brachyramphus temminckii Cassin, iu 

 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), pi. 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 crowTi 

 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 otitline on throat; remaining under 

 parts immaculate white; upper parts, except as described, plain slate-grajdsh, the 

 anterior lesser wing-coverts,, remiges, and tail dusky; bill yellowish (in dried skins), 

 the culmen black; iris dark brown; legs and feet dusky yello\vi8h (in dried skins). 



