APPENDIX. 



CoLYMBUS Troth. Linn. Syji. Nat, 220. 2. 

 Found on the coaft of Spitlbergen. 



CoLYM3VS g/acia/is. Linn. SyJi. Nat. 221. 5. 



The great Northern Diver. Penn, Brit, 

 Zool. p. 413. 

 Found on the coaft of Spitfbergen. 



Larus Rijfa. Linn. SyJi. Nat. iziif. \, 

 Found on the coaft of Spitfbergen. 



Larus Parajiticus. Linn. SyJi. Nat. 226. 10: 



The Ar(Stick: Gull. Penn. Brit. Zool. p. 420. 



Found on the coaft of Spitft)ergen. 



Larus Lburneus^ niveus, Immaculatus, pedibus 

 plumbeo-cinereis. 



Found on the coaft of Spitft)ergen. 



This beautiful bird is not defcribed by Linnsus, nor, I 

 believe, by any other author ; it is nearly related indeed 

 to the Rathfher, defcribed by Marten in his voyage to 

 Spitft)ergen, (See page 77 of the Engllfh tranflation) bur, 

 unlefs that author is much miftaken in his defcription,- 

 differs efientially from it. Its place in the Syftema 

 Natures feems to be next after the Larus nctvius^ where 

 the fpeclfick difference given above, which will diftinguiili 



F f 2 it 



187 



