328 LIST OF THE BIRDS OF EASTERN NORTH AMERICA. 



A. O. U. 

 NO. 



27 (47) LARUS MARINUS. LINN. Great Black-backed ttull. 



North Atlantic Ocean ; south in winter to Middle States ; accidental in 

 Florida. 



28 (50) LARUS UFFINUS. REINH. Siberian Gull. 



Old world species ; recorded from Greenland. 



29 (51) LARUS ARGENTATUS. BRUNN. Herring Gull. 



European species ; accidental on Atlantic coast of North America. 



30 (5 la) Larus argentatus smithsonianus. COUES. American Herring Gull. North 



America ; generally south to Cuba in winter ; the common species of 

 our bays and coast; breeds from Maine northward. 



31 (54) LARUS DELAWARENSIS. ORD. Ring=billed Gull. 



General, North America ; south to Gulf of Mexico in winter. 



32 (56) LARUS CANUS. LINN. Mew Gull. 



European species recorded from Labrador (one record). 



33 (58) LARUS ATRICILLA. LINN. Laughing Gull. 



Atlantic coast of United States ; north in summer to Maine and Nova 

 Scotia; in winter, southern United States, West Indies, and northern 

 South America. 



34 (59) LARUS FRANKLINII. Sw. AND RICH. Franklin's Gull. 



Not common east of the Mississippi River ; not found on the Atlantic 

 coast. 



35 (60) LARUS PHILADELPHIA. (ORD.) Bonaparte's Gull. 



North America ; generally breeds north of United States. 



36 (60a) LARUS MINUTUS. PALL. Little Gull. 



European species ; only once taken on our coast. 



GENUS RHODOSTETHIA. MACGIL. 



37 (61) RHODOSTETHIA ROSEA. (MACGIL.) Ross's Gull. 



Arctic species ; recorded from Alaska and Greenland. 



GENUS XEMA. LEACH. 



38 (62) XEMA SAB1NII. (SAB.) Sabine's Gull. 



Arctic regions ; south in winter to Long Island ; rare. 



Subfamily STERNIN^E. Terns. 



GENUS GELOCHELIDON. BREHM. 



39 (63) GELOCHELIDON NILOTICA. (HASSELQ.) Gull-billed Tern. 



Throughout North America; summer, north to southern New England, 

 winter, south to Brazil. 



GENUS STERNA. LINN. 

 SUBGENUS THALASSEUS. BOIE. 



40 (64) STERNA CASPIA. PALLAS. Caspian Tern. 



Whole of North America ; cosmopolitan species ; breeds on middle Atlantic 

 coast ; also Pacific coast and interior. 



