ORDER LONGIPENNES. 19 



51 a. Larus argentatus smithsonianus COUES. 



American Herring Gull. 



Larus smithsonianus COUES, Pr. Ac. Nat. Sci. Phila. 1862, 296. 

 Larus argentatus var. smithsonianus COUES, Check-List, 1873, 

 no. 5470. 



[B 661, C 5470, R 6660, C 773.] 



GEOG. 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 vegae (PALMEN). 



Vega Gull. 



Larus argentatus var. vegce PALM. Bidr. Sibirisk. Vega Exp. 1887, 



37- 

 Larus vegce STEJN. Auk, V. July, 1888, 310. 



[B-, C , R66 7 , C 775 .] 



GEOG. DIST. Bering Sea and adjacent waters, south in winter to 

 California and Japan. 



53. Larus calif ornicus LAWR. 



California Gull. 



Larus californicus LAWR. Ann. Lye. N. Y. VI. 1854, 79. 

 [B 663, C 5480, R 668, C 777.] 



GEOG. DIST. Western North America, chiefly in the interior, 

 from Alaska to Mexico. 



54. Larus delawarensis ORD. 



Ring-billed Gull. 



Larus delawarensis ORD, GUTHRIE'S Geog. 2d Am. ed. 1815, 319. 

 [B 664, C 548, R 669, C 778.] 



GEOG. DIST. North America at large ; south in winter to Cuba 

 and Mexico. 



