ORDER LONGIPENNES. 19 
51a. Larus argentatus smithsonianus Cours. 
American Herring Gull. 
Larus smithsonianus Cours, Pr. Ac. Nat. Sci. Phila. 1862, 296. 
Larus argentatus var. smithsonianus Cours, Check-List, 1873, 
no. 547a. 
[B 661, C 5472, R 666a, C 773.] 
Groce. Dist.— North America generally, breeding from Maine, 
northern New York, the Great Lakes, and Minnesota northward; 
in winter south to Cuba and Lower California. 
52. Larus vegz (PALMEN). 
Vega Gull. 
Larus argentatus var. vege PALM. Bidr. Sibirisk. Vega Exp. 1887, 
37°: 
Larus vege STEN. Auk, V. July, 1888, 310. 
Groc. Dist.— Bering Sea and adjacent waters, south in winter to 
California and Japan. 
53. Larus californicus Lawre. 
California Gull. 
Larus californicus LAwr. Ann. Lyc. N. Y. VI. 1854, 79. 
[B 663, C 5482, R 668, C 777.] 
Groc. Dist.— Western North America, chiefly in the interior, 
from Alaska to Mexico. 
54. Larus delawarensis Orp. 
Ring-billed Gull. 
Larus delawarensis ORD, GUTHRIE’S Geog. 2d Am. ed. 1815, 319. 
[B 664, C 548, R 669, C 778.] 
Groce. Dist.— North America at large; south in winter to Cuba 
and Mexico. 
