LIST OF PLATES. 13 



Plate 45. 



Puffin. 

 Little Auk. 

 Black Guillemot. 



Plate 46. 



Common Tern. 

 Lesser Tern. 

 Arctic Tern. 

 Roseate Tern. 



Plate 47. 



Riippell's Tern 

 (Astola Island, Mekran Coast, June 10, 1878, Capt. Butler). 

 Gull-billed Tern. 

 Caspian Tern. 



Plate 48. 



Sandwich Tern. 

 Sooty Tern. 



Plate 49. 



Black Tern. 



Noddy. 



White-winged Black Tern. 



Whiskered Tern. 



Plate 50. 



Glaucous Gull. 

 Kittiwake. 

 Ivory Gull 

 (Prince Patrick's Island, June 21, 1853, Capt. McClintock). 



