ORDER LONGIPENNES. 1 5 



38. Stercorarius longicaudus Vieill. 

 Lioug-tailed Jaeger. 



Stercorarius longicaudus Vieill. Nouv. Diet. XXXII. 1819, 157. 



[B 655, C 542, R 699, C 767.J 



Geog. Dist. — Northern part of northern hemisphere, breeding 

 in high northern districts ; south in winter to the Gulf of Mexico. 



Family LARIDiE. Gulls and Terns. 

 Subfamily LARIN.SI. Gulls. 



Genus GAVIA Boie. 



Gavia Boie, Isis, 1822, 563. Type, Larus eburneus Phipps = 

 Larus albus Gunn. 



39. Gavia alba (Gunn.). 



Ivory OuU. 



Larus albus Gunn. in Leem's Beskr. Finm. Lapp. 1767, 285. 

 Gavia alba Stejn. Pr. U. S. Nat Mus. V. 1882, 39. 



[B676, 677, €550, R 657,0785.3 



Geog. Dist. — Arctic Seas, south in winter on the Atlantic coast 

 of North America to Labrador and Newfoundland, casually to New 

 Brunswick, and on the Pacific side to Bering Sea. 



Genus RISSA Stephens. 



Rissa Stephens, Gen. Zool. XIII. 1825, 180. Type, Larus 

 tridcutylus Linn. 



40. Rissa tridactyla (Linn.). 



Kittivrake. 



Larus tridactylus Linn. S. N. ed. 10, I. 1758, 136. 

 Rissa tridactyla Bonap. Comp. List, 1838, 62. 



