799 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
Adult male.—Wing, 191-204.5 (197); tail, 44-52 (46.8); exposed 
culmen, 40-49.5 (46.8); depth of bill at gonydeal angle, 13-15 (13.6); 
tarsus, 34-39 (36.6); middle toe, 41-46 (43.9).¢ 
Adult female.—Wing, 185-208 (190.7); tail, 41-50.5 (46.7); exposed 
culmen, 40-50 (43.5); depth of bill at gonydeal angle, 12.7 ;° 
tarsus, 33.5-39.7 (35. 6); middle toe, 40-48 (43.7).° 
Coasts and islands of northern Atlantic Ocean and eastward to 
Spitzbergen; breeding from southern Greenland southward to New- 
foundland, Magdalen Islands, and Bay of Fundy, on European side 
as far as coast of Portugal (Berlanga Island); in winter southward 
to coast of Maine, coast of Spain, and, rarely, adjacent portion of 
Mediterranean Sea. 
[Colymbus] troille Liynaus, Fauna Suecica, ed. 2, 1761, 52 (Spitzbergen). _ 
Uria troille Nurratt, Man. Orn. U. 8. and Can., Water Birds, 1834, 526. 
Uria troille troille AMERICAN ORNITHOLOGISTS’ Unron, Check List, 3rd ed., 1910, 
. 31. ; 
pe troille Bryant, Proc. Bost. Soc. N. H., viii, 1861, 187 (monogr.). 
[Colymbus] troile Linnzus, Syst. Nat., ed. 12, i, 1766, 220.—Gmer.in, Syst. Nat., 
i, pt. ii, 1789, 585. ; 
Colymbus troile Boppazrt, Tabl. Pl. Enl., 1783, 54 (Pl. Enl., pl. 903).—O’Reny, 
Greenland, 1818, 144. 
[Uria] troile Laraam, Index Orn., ii, 1790, 796.—Retnuarpt (J.), Journ. fir 
Orn., 1854, 442 (Greenland).—Gray, Hand-list, iii, 1871, 101, no. 10820.— 
Suarre, Hand-list, i, 1899, 130. 
Uria troile BONNATERRE, Tab]. Enc. Méth., i, 1790, 35, pl. 9, fig. 3—Temmincx, 
Cat. Syst., 1807, 182; Man. d’Orn., 1815, 606; 2d ed., pt. ii, 1820, 921; iv, 1840, 
573.—Vizwtot, Nouv. Dict. d’Hist. Nat., xiv, 1817, 35, part, pl. E7, 
fig. 3—Mryerr and Wo tr, Taschenb. Deutschl., 1810, 445.—Borz, Isis, 1822, 
872.—VALENCIENNES, in Choris Voy. Pittor. antour du Monde, 1822, Aléout., 
25, pl. 20.—SrerHENs, Shaw’s Gen. Zool., xii, pt. 2, 1824, 244.—WERNER, 
Atlas, Palmipédes, 1828, pl. 95.—Swarnson and Ricwarpson, Fauna Bor.- 
Am., ii, 1831, 477.—Bream, Handb. Vég. Deutschl., 1831, 981.—GouLp, 
a Nine specimens. b Sixteen specimens. ¢ Two specimens. 
Great- , 
Locality. Wine, | Ten, | PU | oF) Taree Me 
of bill. |” 
MALES, 
Threeadult males from Europe. ........---.---------- 195. 8 45 47.5 13 36.3 44.1 
Six adult males from Atlantic coast of North America.| 197.6 47.7 43,4 13.3}. 36.8 43.9 
Ten adult males from Pacific coast of North America 
CUA CAUfORNICE) x ceases cesses swum cent te Sees 203. 9 45.9 46.1 14.1 36.3 45.9 
Five adult males of U. ringvia..........0....00000e00- 201.7 49.1 A302: lewiciniesaiis 37.7 45.6 
FEMALES, 
Six adult females from Europe.......----.-. iz seeaseel 196, 2 46.6 46. 6 12.7 35.2 42.2 
Ten adult females from Atlantic coast of North America| 198.8 46.8 41.9 13.2 36.1 44.6 
Eleven adult females from Pacific coast of North Amer- 7 : 
ica ( U.t. californica)... 0.02.0. cece eee ee wees eccccces| 204 45.6 45.7 15 36.3 45 
Oneadult female of U. ringvia .. 22... ..ccceceeeseeeeee 202 QD Nesawenmslaxeccase 35 46 
