868 BRACHYRHAMPHU8SYNTHLIBORHAMPHUS 



1198. SHORT-BILLED AUK. 

 BRACHYRHAMPHUS BREVIROSTRIS. 



Brachyrhamphus brevirostris (Vigors), Zool. Jour. iv. p. 357 (1828) ; 

 (Seebohm), B. Jap. Emp. p. 279 ; Ogilvie Grant, Cat. B. Br. Mus. 

 xvi. p. 593; B. kittlitzi, Brandt, Bull. Acad. St. Petersb. ii. 

 p. 346 (.1837) ; Tacz. F. 0. Sib. 0. p. 1213 ; Kidgway, p. 15 ; Turner, 

 Nat. Hist. Alaska, p. 120, pi. ii. 



< ad. (Kuriles). Differs from B. perdix in being much smaller, with a 

 much smaller bill ; upper parts darker and more distinctly mottled with 

 buff ; chin and throat white closely mottled with black ; rest of under 

 parts white less closely spotted and mottled with black ; bill black ; legs 

 and feet pale blue, darker posteriorly ; claws and iris black. Bill from 

 feathers to tip 0'45, wing 5 '5, tail 1*1, tarsus 0*7 inch. Sexes alike. 



Hal. North Pacific from Kamchatka, the Aleutian Islands, 

 and the Sea of Ochotsk, to Japan ; Unalaska, south to the 

 coast of Mexico. 



In general habits it does not differ from B. perdix. Its eggs 

 do not appear to be known, but doubtless resemble those of 

 B. perdix except in being smaller. 



SYNTHLIBORHAMPHTJS, Brandt, 1837. 



1199. ANCIENT AUK. 

 SYNTHLIBORHAMPHUS ANTIQUUS. 



Synthliborhamphus antiquus (Gmel.), Syst. Nat. i. p. 554 (1788) ; Tacz. 

 F. 0. Sib. 0. p. 1215 ; Kidgway, p. 14 ; Ogilvie Grant, Cat. B. Br. 

 Mus. xxvi. p. 596 ; (Seebohm), B. Jap. Emp. p. 276. 



Umi-suzumi, Jap. 



(J ad. (Alaska). Crown, nape, hind neck, sides of head, chin, throat, 

 sides of lower neck, and flanks black, the nape, sides of lower hind neck 

 and fore back more or less strongly marked with white ; upper parts dark 

 slate-grey ; wings and tail black washed with slate-grey ; under parts, 

 including the sides of the neck, white ; bill whitish grey, brownish black 

 along the culmen and towards the base ; legs and feet bluish white, the 

 joints brownish black ; basal part of webs sooty black ; iris dark brown. 

 Culmen from base of feathers 0'55, wing 5'3, tail T9, tarsus 1-05. Sexes 

 alike. In winter the fore neck and throat are white, the chin dark grey. 

 and the stripes on the sides of the head absent. 



Hob. North Pacific from Kamchatka to the Commanders, 

 Aleutians, Kuriles, and Japan. 



