No 



f 37 Parasitic Jaeger 



// 



Stercorarius parasiticus 



38 Long-tailed Jaeger 



Stercorarius longicaudus 



39 Ivory Gull 



Pagophila alba 



J*/ 40 Kittiwake 



Rissa tridactyla 



40a Pacific Kittiwake 



Rissa tridactyla pollicaris 



41 Red-legged Kittiwake 



Rissa brevirostris 



t 



42 Glaucous Gull 



Larus glaucus 



V<42.i Point Barrow Gull */%. 



Larus barrovianus 



* 



Pt ice 



*.8o 

 3 25 



v 43 Iceland Gull '/> 



Larus leucopterus 



«fi 44 Glaucous-winged Gull ^/l 



Larus giaucescens / ** 



*-5° 



2.00 



5.00 ^2.50 

 .6.00 



4.OO *2.00 

 I.50 



45 Kumlien's Gull 



Larus kumlieni 



46 Nelson's Gull 



Larus nelson i 



y/, 47 Great Black-backed Gull V* 



La,rns marinns f Vr 



* 



I.50 



48 Slaty-backed Gull 



Larus schistisagus 



49 Western Gull 



Larus occidentalis 



[50] Siberian Gull 



Larus afflnis 



ft 51 Herring Gull 



Larus argentatua 



52 Vega Gull 



Larus vegte , 



3.00 



.40 



* 



/J 



5.0O 



25 



6 ^3.00 



i. r ) 



