XX 



Sula bassana 



Rhynchops nigra 



Sterna Hirundo 



" minuia 



" Dougalli 



" nigra 



" Aiiglica 



" Trudeauii 



" Cayana 



GENUS SULA. 



Gannet. 



Common Gannet 



FAMILY LARIN.E. 

 GULLS. 



GENUS RHYNCKOPS. 

 Skimmer. 



Black Skimmer 

 GENUS STERNA. 

 Tern. 



Common Tern 



Least " 



Roseate '' 



Black 



Marsh " 



Trudeau's " 



Cayenne " 



GENUS LARUS. 



Gulls. 



Herring or Silvery Gull 



Black-beaded 



Bonaparte's 



Common or Ring-billed 



Kitiiwake 



Great Black-backed 



Fork-tailed 



Glaucous 



Larus argentatus 



" atricilla 



" Bonaparlii 



" zonorhynchus 



" tridactylus 



" marinus 



" Sabiui 



" glaucus 



FAMILY PROCELLARIN.^. 

 FULMARS. 



GENUS LESTRIS. 

 Jager. 



Arctic Jager 

 Pomarinc " 

 Richardson's Jager 

 GENUS PUFFINUS. 

 Shearwater. 



Wandering Shearwater 

 Manks " 



Dusky *' 



GENUS THALASSIDROMA. 

 Petrel. 

 Thalassidroma Wilsonii Wilson's Petrel 



" Leachii Fork-tailed " 



" pelagica Least *' 



FAMILY ALCINiE. 



AUKS. 



GENUS MORMON. 

 Puffin. 

 Mormon arcticus Common or Arctic PufSn 



Lestris parasiticus, 

 " pomarinus 

 " Richardsonii 



Puffinus cinereus 

 " anglorum 

 " obscurus 



