ORDER CHARADRIIFORMES. 131 



Scandinavia, and the Baltic Sea. Accidental in Nebraska, Maryland, North 

 Carolina, Florida, Madeira, and Italy. (American records confused with 

 the preceding species.) 



Larus glaucescens Naumann. Glaucous-winged Gull. [44.] 



Larus glaucescens Naumann, Naturg. Vogel Deutschl., X, 1840, 351. 

 (Nord-Amerika.) 

 Range. — Breeds from Norton Sound south to Washington; also on the 

 Aleutian Islands and islands in Bering Sea, and in northeastern Siberia from 

 Kamchatka and Commander Islands northward. Winters from the Aleutian 

 and Pribilof islands south to Lower California, Hawaii (casually), and northern 

 Japan; ranging occasionally to Point Barrow.^ 



Larus marinus Linnaeus. Great Black-backed Gull. [47.] 



Larus marinus Linnaeus, Syst. Nat., ed. 10, I, 1758, 136. (in Europa = 

 Gotland, Sweden.) 

 Range. — -Breeds from northern Labrador, Iceland, and central Greenland 

 south to Nova Scotia, northern British Isles, Scandinavia, and northern 

 Russia. Winters from southern Greenland south to the Great Lakes and 

 Delaware Bay (casually to Florida) ; also to the Canaries, Azores, the Mediter- 

 ranean, Black, and Caspian seas, and the coast of Senegal. Accidental in 

 Nebraska and in Bermuda. 



Larus schistisagus Stejneger. Slaty-backed Gull. [48.] 



Larus schislisagus Stejneger, Auk, I, No. 3, July, 1884, 231. (Bering 



Island and Petropaulski, Kamtschatka = Bering Island, Commander 



Islands.) 



Range. — Breeds in Kamchatka and on the Commander Islands. Winters 



south to southern Japan. Casual in Alaska (Unalaska, Port Clarence, Nome, 



Sitka), Mackenzie (Franklin Bay), and on Diomede and Herald islands. 



Larus occidentalis occidentalis Audubon. Western Gull. [49.] 



Larus occidentalis Audubon, Orn. Biog., V, 1839, 320. (Cape Disap- 

 pointment [Washington].) 

 Range. — Breeds from Washington to northern California and the Farallon 

 Islands. Winters south to Los Angeles County, California where some remain 

 all summer. Casual in southern British Columbia; accidental in Colorado. 



Larus occidentalis wymani Dickey and van Rossem. Wyman's Gull. [49?).] 



Larus occidentalis wymani Dickey and van Rossem, Condor, XXVII, 

 No. 4, July 15, 1925, 163. (Santa Catalina Island, California.) 

 Range. — Coast of California and Lower California from Monterey County 

 and the Santa Barbara Islands south at least to Asunci6n Island, Lower Cali- 

 fornia. Accidental in Illinois (Chicago). 



^ Larus kumlieni Brewster and Larus nelsoni Henshaw transferred to the 

 Hypothetical List. 



