720 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



under parts, including median portion of lower foreneck, white, im- 

 maculate except outer portion of sides and flanks, where streaked 

 with grayish brown; bill black; iris dark brown; legs and feet 

 blackish? (said to be lighter colored than those of U. troille).'* 



Adult male. ~Wmg, 193-211 (201.7); tail, 48-50.5 (49.1); exposed 

 culmen, 39-45.5 (43.2) ; tarsus, 37-38 (37.7) ; middle toe, 43-47 (45.6).* 



Adult female. — Wing, 202; tail, 47; exposed culmen (bill defec- 

 tive); tarsus, 35; middle toe, 46.*^ 



Coasts and islands of northern Atlantic Ocean and eastward to 

 Spitzbergen; southward to coast of eastern Maine in winter; breeding 

 on islands in Gulf of St. Lawrence (Gannet Rock; Bird Rocks; 

 Grosse Isle; Magdalen Islands) and northward, on European side 

 southward to Outer Hebrides, Grimsay Island, etc., rarely to coast 

 of France (Aiguilles d'Etretat). 



[Uria] ringvia Brunnich, Om. Bor., 1764, 28 (Iceland). 



Uria ringvia Schinz, Eur. Fauna, i, 1840, 359. — Gray, List Birds Brit. Mus., iii) 

 Anseres, 1844, 157. — Degland, Orn. Eur., ii, 1849, 513. — Cassin, in Baird, 

 Rep. Pacific R. R. Surv., ix, 1858, 914.— Baird, Cat. N. Am. Birds, 1859, 

 no. 730. — Degland and Gerbe, Orn. Eur., ii, 1867, 600. — Samuels, Nests 

 and Eggs N. Am. Birds, 1883, 570. — Baird, Brewer, and Ridgway, Water 

 Birds N. Am., ii, 1884, 481 (under U. troih) .—{'i'i) Schalow, Journ. fur 

 Orn., 1891, 271 (Alaska).— Sharpe, Handb. Birds Great Brit., iv, 1897, 119, 

 pi. 107. 



Uria (Lomvia) ringvia Brandt, Bull. Sci. Ac. St. Petersb., ii, 1837, 345. 



Catarractes ringvia Bryant, Proc. Bost. Soc. N. H., viii, 1861, 139 (monogr.). 



Lomvia ringvia Coues, Proc. Ac. Nat. Sci. Phila., 1868, 77 (monogr.). — Goss, 

 Trans. Kansas Ac. Sci., viii, 1883, 60 (Bird Rocks, Gulf of St. Lawrence, 

 breeding; habits). — Brewster, Proc. Bost. Soc. N. H., xxii, 1883, 410 (Bird 

 Rocks, breeding; crit.). 



Uria troile, var. ringvia Collett, Forh. Vid. Selsk. Christiania, 1868, 192. — Grant, 

 Cat. Birds Brit. Mus., xxvi, 1898, 575. 



Ulria} rhingvia Keyserling and Blasius, Wirb. Eur., 1840, pp. xcui, 238. 



Uria rhingvia Naumann, Vog. Deutschl., xii, 1844, 524, pi. 332. — Reichenbach, 

 Natatorea, 1850, pi. 8, figs. 37, 38. 



iUria] hringvia Reinhardt (J.), Journ. flir Orn., 1854, 442 (Greenland). 



[Uria] rhingvia Gray, Hand-list, iii, 1871, 101, no. 10821. 



Uria m-ingvia Fritsch, Nat. Vog. Eur., 1870, 495; Atlas, 1871, pi. 59, fig. 5. 



Uria rhyngvia Grondal, Ornis, iii, 1887, 597 (etymology). 



(?) Uria alga Brunnich, Orn. Bor., 17(14, 28 (Denmark). 



U[ria\ troile leucophtalmos Faber, Prodr. Orn., 1822, 42 (Iceland; color variety); 

 Isis, 1824, 146. 



Uria leucophthalmos Tnoupsoy! , Nat. Hist. Ireland, iii, 1851, 211. — Kjaerb0llino, 

 Danm. Fugle, 1852, 408, pi. 52, fig. 5. 



U[ria] leucophthalmus Holboll, Naturhist. Tidssk., iv, 1843, 454 (Greenland). 



o I have not been able to e.xamine specimens in winter plumage nor of the young. 

 b Five specimens, 

 c One specimen. 



Four adults of unknown sex measure as follows: Wing, 188-204 (195.4); tail, 45.5-53 

 (49.1); exposed culmen, 41-48.5 (44.1); tarsus, 34-37 (35.4); middle toe, 42-46 (44). 



