4. uuTA. 587 



Nelson, Rep. N. H. Alaska,'^. 44 (1887) ; Ridyw. Man. N. Amer. B. 

 p. 17 (1887) ; Tacz. Mem. Acad. St. PHersb. xxxix. p. 1222 (1893) 

 [E. Siberia] ; Luomis; P. Calif. Acad. (2) vi. p. 19 (189G) [Cali- 

 fornia]; Grinnell, Auk, xv. -p. 124 (1898) [Sitka]; Scale, P. Ac. 

 Pkilad. 1898, p. 129 [King's I.]. 



Uria gryUe, Kittl. (nee Linn.), Ids, 1832, p. 1105 ; id. Denkw. Reise, 

 i. pp. 273, 291, ii. p. 221 (1858). 



Uria columba, Keys. u. Bias. Wirbelth. p. xcii (1840) ; Cassin, U. S. 

 Expl. Exped. p. 346, pi. xxxviii. fig. 1 (1858) ; Cassin, in Baird, 

 B. N. Amer. p. 912, pi. xcvi. fig. 1 (1858) ; Cooper Sf Suckl. N. H. 

 Wash. Terr. p. 285 (1860); Cassin, P. Ac. Philad. 1862, p. 323 

 [Bering Straits] ; Coues, P. Ac. Philad. 1868, p. 72 ; Brandt, 

 Melang. Biol. vii. p. 207 (1869); DallSf Bann. Tr. Chicago Acad. 

 i. p. 309 (1869) [Sitka; Kodiak I.]; G. R. Gray, Hand-l. B. iii. 

 p. 101 (1871) ; Coues, Key N. Amer. B. p. 345 (1872) ; r- Finsch, 

 Ahh. nat. Ver. Brem. iii. p. 78 (1872) [Alexandrovsk, E. Siberia]; 

 Ball, Avif. Aleut, p. 11 (1873); id. P. Calif. Acad. v. pp.35, 

 279 (1873) [Aleutian Is.]; Barrows, P. Bost. Soc. xix. p. 159 

 (1877) ; Tacz. Bull. Soc. Z. Fr. ii. p. 51 (1877), vii. p. 398 (1882) 

 [Bering I.] ; Bean, P. U.S. Nat. Mm. v. p. 172 (1882) [Sitka] ; 

 Nelson, Cruise Corwin, p. 117 (1883) ; Hartl. J. f. O. 1883, p. 285 

 [Alaska]; Coues, Key N. Amer. B. 2nd ed. p. 815 (1884); 

 Dybuwski ^ Tacz. Bull. Soc. Z. Fr. ix. p. 147 (1884) ; Pabnen, Veg(t~ 

 Exped. Vetensk. lakttag. v. p. 391 (1887). 



Alca columba, Seehohn, B. Japan, p. 275 (1890) [part]. 



Adult in hreecUng-plumage. Like U. r/rylle, but the bill is stouter 

 and more obtuse at the tip ; the plumage is dark slate-black, with 

 a grey rather than a green gloss ; the under wing- coverts are 

 mostly smoky-brown, and the white patch on the upper surface 

 of the wing is divided on the outer half by a black V-shaped bar, 

 produced by the basal part of the greater coverts, the outermost of 

 which are black nearly to the extremity ; the quills have the basal 

 part of the inner web greyish, never white ; tail black, composed of 

 14 feathers. Iris dark brown ; bill black, inside of mouth, legs 

 and feet bright red ; claws black. Total length about 14-5 inches, 

 culmen from feathers on forehead to tip l'3o, from gape to tip 1'9, 

 greatest depth of both mandibles at base 0-45, wing 7, tail 2-2-05, 

 tarsus 1"3-1'35, middle toe and claw 1*9. 



Adult ill non-hreeding plumage. Very similar to U. grijlle, but 

 easily distinguished by the V-shaped black patch on the white 

 wing-coverts. 



Immature. Similar to the adult in winter plumage, but the white 

 wing-coverts are tipped with dark brown, and the white feathers 

 of the underparts are narrowly fringed with the same colour. 



Young in down. Similar to that of U. grj/lle. 



Hah. Pacific coast of North America from California to Aleutian 

 Islands and Sitka across Bering Sea, as far west at least as the 

 Commander Islands, and perhaps to East Siberia. 



n,b. (S ^ ad. sk. Bering I., Commander Group, G. E. II. Barrett- 

 July 12. Hamilton, Esq. 



[P.]. 



