504 



THE DIVING BIRDS — PYGOPODES. 



Synthliboramphus antiquus. 



THE BLACK-THROATED GUILLEMOT. 



Aha antiqiia, Gmel. S. N. I. ii. 1788, 554, no. 11. 



Uria antiqua, Tkmm. & Schleg. Fcauna Jap. 1845, pi. 80. — AuD. Orn. Biog. V. 1839, 100, pi. 402, 



fi«T. 12 ; P>. Am. VII. 1844, 263, pi. 470, tig. 1 (but not fig. 2, which = Brachijramphus KittUlzi, 



summer plumage). 

 Brachyramphus antiqmis, Guay, Gen. B. III. 1849, 644.— Cass, in Baird's B. N. Am. 1858, 916.— 



Baiiid, Cat. N. Am. B. 1859, no. 736. 

 Brachyramphus (Synthliboramphus) antiquus, Buaxpt, Bull. Ac. St. Petevsb. II. 1837, 347. 

 Synlhliborhamphus antiquus, CouES, Pr. Ac. Nat. Sci. Philad. 1868, 56 ; Kej^ 1872, 344 ; Clieck List, 



1873, no. 627; 2d ed. 1882, no. 864. — Bkandt, Mel. Biol, VII. 1869, 217. — Kidgw. Norn. 



N. Am. B. 1881, no. 753. 

 Uria senicula, Pall. Zoog. Ro.sso-As. II. 1826, 369, pi. 85. 

 Mcrguius cirrhocephalus, ViG. Zool. Voy. Blossom, 1839, Birds, p. 32. 

 Brachyramphus brachyptcrus, Brandt, Bull. Ac. St.-Petersb. 11.1837, 346 (quotes "Uria brachyptcra, 



KiTTLiTZ, MSS."). — Gray, Gen. B. III. 1849, 644. — Cass, in Baird's B. N. Am. 1858, 917. — 



Bairr, Cat. N. Am. B. 1859, no. 734. — CouES, Pr. Philad. Acad. 1868, 66 ; 2d Check List, 1882, 



no. 870. — RiDGW. Nom. N. Am. B. 1881, no. 759. 



Hab. Coasts and islands of the North Pacific, from Japan to Kamtschatka, across the Aleutian 

 chain, and south to Sitka. 



Sp. Char. Adult, hi-eeding-plumage : Head and neck chiefly black, duller and more fuliginous 

 anteriorly and on the throat ; on each side of the occiput, from above the middle of the eyes to the 

 nape, a series of white streaks, blended so as to form a broad stripe, those of opposite sides some- 

 times meeting across the lower part of the occiput ; black of the throat separated from that of the 



Summer plumage. 



nape by a broad intervening space of white, which extends upward on each side of the neck to 

 the auricular region. Lower parts continuous white, the sides and flanks, beneath the wings, sooty 

 black. Upper parts unitbrra plumbeous, the anterior lesser coverts and the remiges darker ; sides 

 of the upper back, between the deep black of the nape and the dull black on the sides of the 

 breast, black, marked with numerous broad white streaks. Bill yellowish, the basal half blackish ; 

 iris brown ; legs and feet dull yellowish (in the skin), the webs dusky. Winter plumage : Simi- 

 lar to the above, but whole throat white (the chin, sometimes upper throat also, plumbeous), the 

 broad white latero-occipital stripes and the streaks on the upper back absent ; the sides and flanks 

 white, the outermost feathers striped with slaty. 



Total length, about 9.50-10.50 inches ; extent, 16.75-18.25 ; wing, 5.25-5.50 ; culmen, .60 ; 

 tarsus, .95-1.00; middle toe, without claw, 1.00-1.05. 



