SYSTEMATIC INDEX 



XXVll. 



FAMILY LAEID^. 

 SUB-FAMILY 



SABINE'S GULL 



WEDGE-TAILED GULL... 



BONAPARTE'S GULL 



LITTLE GULL .. 



BLACK-HEADED GULL ... 



MEDITERRANEAN BLACK- 

 HEADED GULL ... / .., 



GREAT BLACK-HEADED GULL... 



COMMON GULL 



HERRING-GULL 



YELLOW-LEGGED HERRING- 

 GULL 



LESSER BLACK-BACKED GULL... 



GREAT BLACK-BACKED GULL... 



GLAUCOUS GULL 



ICELAND GULL... 



KITTIWAKE GULL 



IVORY GULL 



Xema sabinii 

 Ithodostethia rosea 

 Larus Philadelphia 

 Larus minutus ... 

 Larus ridibundus 



Larus melanocephalus 

 Larus iclithyaetus 

 Larus canus 

 Larus argentatus 



Larus cachinnans 

 Larus fuscus 

 Larus marinus ... 

 Larus alaucus ... 

 Larus leucopterus 

 Rissa tridactyla... 

 Pagophila eburnea 



PAGE 



405 

 407 

 408 

 409 

 411 



418 

 419 

 421 

 425 



429 

 430 

 434 

 438 

 442 

 446 

 451 



GREAT SKUA ... 

 POMATORHINE SKUA 

 ARCTIC SKUA ... 

 LONG-TAILED SKUA 



FAMILY STERCOBARIID^E. 



Megalestris catarrhactes ... 454 



Stercorarius pomatorhinus ... 457 



Stercorarius crepidatus ... 460 



Stercorarius parasiticus ... 463 



ORDEE ALCLE. 



FAMILY ALCID^E. 

 SUB-FAMILY 



RAZORBILL 



GREAT AUK 



COMMON GUILLEMOT ... 

 BRUNNICH'S GUILLEMOT 

 BLACK GUILLEMOT 

 LITTLE AUK 



Alca tor da 

 Alca impennis . 

 Uria troile 

 Uria bruennichi. 

 Uria grylle . . 

 Merffidus alle 



468 

 472 



482 

 488 

 489 

 493 



PUFFIN .. 



SUB-FAMILY FRATERCULIN^E. 

 Fratercula arctica 



497 



