328 LIST OF THE BIRDS OF EASTERN NORTH AMERICA. 



A. O. U. 

 NO. 



27 (47) LARUS MARINUS. Linn. Great Black-backed Gull. 



North Atlautic Ocean ; south iu winter to Middle States ; accidental in 

 P'lorida. 



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



Old world species; recorded from Greenland. 



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



P^uropeau species ; accidental on Atlautic coast of North America. 



30 (51a) Larus argentatus smUhsonianns. Coues. American Herriug 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 iu 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 Eicii. Franklins Gull. 



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

 coast. 



35 (60) LARUS PHILADELPHIA. (Oru.) 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 (ireenland. 



Geni:s XEMA. Leach. 



38 (62) XEMA SABINII. (Sap..) Sabine's Gull. 



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



Subfamily STERNIN/E. Terns. 



Genus QELOCHELIDON. Brehm. 



39 (63) GELOCHELIDON NILOTICA. (Hasselq.) Gull=billed Tern. 



Throughout North America; summer, north to southern New P^ngland, 

 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 Atlautic 

 coast ; also Pacific coast and interior. 



