504 



THE DIVING BIllDS — PYGOPODES. 



Synthliboramphus antiquus. 



THE BLACK-THROATED GUILLEMOT. 



Jlca antiqua, Gmel. S. N. 1. ii. 1788, 554, no. 11. 



Una antiqua, Tkmm. it Sciilkg. Fauna Jap. 1845, pi. 80. — Auu. Oin. Biog. V. 18.39, 100, j)!. 402, 



fig. 12 ; P.. Am. VII. 1844, 263, pi. 470, lig. 1 (but not fig. 2, wlnah ^ Brachyram2)hus Kittlitzi, 



summer plumage). 

 Brachi/mmphus antiquus, Gray, Gen. B. III. 1840, 644. — Cass, in Baird'.s B. N. Am. 1858, 916. — 



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

 Brachyramjihus (Sijnthlihoram2)hus) antiquus, Buanut, I'.ull. Ac. St. Pctorsb. II. 1S37, 347. 

 Si/nlhfiborhamphus antiquus, CoUEs, Pr. Ac. Nat. Sci. Philail. 1868, 56 ; Key, 1872, 344 ; Check List, 



1873, no. 627; 2il ed. 1882, no. 864. — Bkandt, Mel. Biol. VII. 1869, 217. — Uidgw, Nom. 



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

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

 Mcrcjulus cirrlioceplialus, Vio. Zool. Voy. Blossom, 1839, Birds, p. 32. 

 B rachyramphus h-achypterus, Brandt, Bull. Ac. St.-Petersb. II. 1837, 346 (quotes "Uria bmchyptcra, 



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



Baird, Cat. N. Am. B. 1859, no. 734.— Coues, Pr. PliiLul. Acad. i868, 66 ; 2d Check List, 1882, 



no. 870. — RiDGW. Kom. N. Am. B. 18S1, 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, brecding-jdumage : Head and neck chiefly black, duller and more fuliginous 

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

 n,ip(>, 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 npwanl on each side of the neck to 

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

 black. Upper i)arts uniform 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 bx-own ; legs and feet dull yellowish (in the skin), the webs dusky. IVintcr flumage : 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, lU.75-18.25 ; wing, 5.25-5.50; culmen, .60; 

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



