88 CHECK-LIST OF NORTH AMERICAN BIRDS. 



45. Larus kumlieni BREWST. 



Kumlien's Gull. 



Larus kumlieni BREWST. Bull. Nutt. Orn. Club, VIII. 1883, 216. 

 [B - C -, R - C -.] 



HAB. North Atlantic coast of North America, breeding in Cum- 

 berland Gulf ; south in winter to the coast of the Middle States. 



46. Larus nelsoni HENSH. 



Nelson's Gull. 



Larus nelsoni HENSH. Auk, I. July, 1884, 250. 



[B -, C - R C .] 

 HAB. Coast of Norton Sound, Alaska. 



47. Larus marinus LINN. 



Great Black-backed Gull. 



Larus marinus LINN. S. N. ed. 10, I. 1758, 136. 

 [B 660, C 546, R 663, C 771.] 



HAB. Coasts of the North Atlantic ; south in winter to Long Island 

 and Italy. 



48. Larus schistisagus STEJN. 



Slaty-backed Gull. 



Larus schistisagus STEJN. Auk, I. July, 1884, 231. 

 [B C , R , C .] 



HAB. North Pacific, chiefly on the Asiatic side ; Herald Island, 

 Arctic Ocean, and Alaska. 



49. Larus occidentalis AUD. 



Western Gull. 



Larus occidentalis AUD. Orn. Biog. V. 1839, 3 2 - 

 [6662, C S4 7^R66 4 , C774-] 



HAB. Pacific coast of North America, breeding from Southern 

 California northward. 



