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| Larus marinus | |
| Northwest Territories, 1882 |
| Larus canus | |
| Norway, 1887 |
| Larus glaucescens | |
| Location and date unknown |
| Larus glaucoides | |
| Greenland, 1896 |
| Riissa tridactyla | |
| St. Paul Is., Bering Sea, 1897 |
| Larus occidentalis | |
| California, 1882 |
| Larus pipixcan | |
| Minnesota, 1887 |
| Larus fuscus | |
| Spitzbergen Island, Norway, 1902 |
| Larus argentatus | |
| Gull Island, Lake Superior, 1886 |
| Larus delawarensis | |
| North Dakota, 1897 |
| Larus hyperboreus | |
| Eyrarbakkr, Iceland, 1899 |
| Larus atricilla | |
| Louisiana, 1903 |
| Larus californicus | |
| Great Salt Lake, Utah, 1898 |
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