20 CHECK-LIST OF NORTH AMERICAN BIRDS. 



55. Lams brachyrhynchus RICH. 



Short-billed Gull. 



Larus brachyrhynchus RICH. F. B. A. II. 1831, 421. 

 [B 665, 673, C 549, R 670, C 780.] 



GEOG. DIST. Arctic America and Pacific coast, south in winter to 

 southern California. 



[56.] Larus canus LINN. 



Mew Gull. 



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



[B C , R6 7 i, C 779 .] 

 GEOG. DIST. Europe and Asia ; accidental in Labrador ? 



57. Larus heermanni CASS. 



Heermann's Gull. 



Larus heermanni CASS. Pr. Ac. Nat. Sci. Phila. VI. 1852, 187. 



[B666, C 551, R 672, C 781.] 



GEOG. DIST. Pacific coast of North America, from British 

 Columbia to Panama. 



58. Larus atricilla LINN. 



Laughing Gull. 



Laru* atricilla LINN. S. N. ed. 10, I. 1758, 136. 

 [B 667, C 554, R 673, C 786.] 



GEOG. DIST. Atlantic and Gulf coasts of the United States, 

 north to Maine and Nova Scotia ; south in winter through West 

 Indies, Mexico (both coasts), Central America, and northern South 

 America (Atlantic side) to the Lower Amazon. 



59. Larus franklinii Sw. & RICH. 



Franklin's Gull. 



Larus franklinii Sw. & RICH. F. B. A. II. 1831, 424, pi. 71. 



