794 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
red; nuptial tufts present in a rudimentary condition but of a light 
brownish color. 
Young in first summer or autumn.—Similar to the preceding but 
bill smaller, narrower, and more brownish, and without indication of 
nuptial tufts. 
Downy young.—Uniform dark sooty grayish brown, paler below, 
especially on abdomen, where inclining to sooty gray. 
Adult male —Wing, 187-206 (194.4); tail, 57-64.5 (62.3); culmen, 
53-65 (60.2); greatest depth of bill, 41-51 (46.8); tarsus, 30-34.5 
(32.4); middle toe, 45.5-53.5 (49).* 
Adult female—Wing, 179.5-196.5 (189.2) ; tail, 58-64 (63); cul- 
men, 54.5-60 (57.1); greatest depth of bill, 43-47 (44.6); tarsus, 
29-33 (31.1); middle toe, 43-49 (46.2).° 
Coasts and islands of Bering Sea and contiguous portions of Arctic 
and Pacific oceans; breeding from Koliutschin Island (Arctic coast 
of eastern Siberia, near Bering Strait) and Cape Lisburne, Alaska, 
to Aleutian, Commander, and Pribilof Islands, on American side 
breeding southward to coast of California (Farallon Islands; Santa 
Barbara Islands); southward in winter to Lower California (Cape 
Los Martires); accidental in Greenland (?) and Maine. 
Alca cirrhata Patuas, Spic. Zool., i, fasc. v, 1769, 7, pl. 1 and pl. 2, figs. 1, 2, 3 
(Kamchatka to Aleutian Islands).—Moscuter, Journ. fiir Orn., 1856, 335 
(Greenland).—Krrrurz, Denkw. Reise, ii, 1858, 205.—Boxav, Journ. fiir 
Orn., 1880, 182 (coast e. Siberia). ' 
[Alca] cirrhata Gustin, Syst. Nat., i, pt. ii, 1789, 553.—Latuam, Index Orn., ii, 
1790, 791.—Bonnaterre, Tabl. Enc. Méth., i, 1790, 32, pl. 10, fig. 4, pl. 11, 
fig. 1—Gray, Hand-list, iii, 1871, 96, no. 10778. 
Alca (Mormon) cirrhata Bouav, Journ. fir Orn., 1880, 132 (coast e. Siberia). 
Alca Mormon cirrhata Dorrtrzs, Journ. fiir Orn., 1888, 96 (e. Siberia). 
a Eleven specimens. 6 Nine specimens. 
Great- . 
Locality. Wing. | Tail. cS aon a ‘Tarsus, AEE : 
of bill. 
MALES, 
One adult male from Lower California (Cape Los 
MAPbIROS); -(-.-csscu cane ance tdcaawatensisiosuisvagceedentl 187 60 58 47 32.5 48.5 
Two adult males from California (Farallon Islands)...| 193.7 60 58 46.2 34 51 
Seven adult males from Alaska...........-..-.-----.| 195.6 63.1 60.3 46.9 31.9 48.6 
One adult male from Bering Island, Kamchatka......} 194.5 63.5 59 |, 44 31.5 48.5 
FEMALES. 
One adult female from California (Farallon Islands)...} 185 61 56.5 44.5 32 49 
Six adult females from Alaska...........2:eeeeeeeeeeee 190. 4 61.4 56.6 44,9 30.6 45.7 
One adult female from Bering Island............--..-- 179 59 57.5] 44 31 43 
One adult female from Kuril Islands.................| 196 58.5) 60 43 33 49 
