328 LIST OF THE BlliUS OF EASTERN NORTH AMERICA. 



A. O. 

 NO. 



27 (47) LARUS MARINUS. Linn. Qreat Black-backed QuII. 



North Atlantic Oceau ; 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 ARQENTATUS. BRfJNN. Herring QuU. 



European species ; accidental on Atlantic coast of North America. 



30 (51a) Larus argentalus smithiionianus. Coues. American Herring Gull. North 



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

 our bays and coast ; breeds from Maine northward. 

 3[ (54) LARUS DELAWARENSIS. Ord. Ring=billed Qull. 



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



32 (56) LARUS CANUS. Linn. Mew Qull. 



European species recorded from Labrador (one record). 



33 (58) LARUS ATRICILLA. Linn. Laughing Qull. 



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 FRANKLIN!!. Sw. and Eich. Franklin's Qull. 



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

 coast. 



35 (60) LARUS PHILADELPHIA. (Ord.) Bonaparte's Qull. 



North America ; generally breeds north of United States. 



36 (60c6) LARUS MINUTUS. Pall. Little Qull. 



European species ; only once taken on our coast. 



Genus RHODOSTETHIA. Macgil. 



37 (61) RHODOSTETHIA ROSEA. (Macgil.) Ross's Qull. 



Arctic species ; recorded from Alaska and Greenland. 



Geni;s XEMA. Leach. 



38 (62) XEMA SABINII. (.Sah.) Sabine's Qull. 



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



Subfamily STERNIN.C Terns. 



Genus QELOCHELIDON. Brehm. 



39 (63) QELOCHELIDON NILOTICA. (Hasselq.) Qull-billed Tern. 



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

 winter, south to Brazil. 



Genus STERNA. Linn. 

 Suhgenus 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. 



