GULL. NATATORES. LARUS. 497 



IVORY GULL. 



LARUS EBURNEUS, Gmel. 



PLATE XCIV." 



Larus eburneus, Gmel Syst. 1. 59G.Lath. Ind. Orn. 2. 81C. sp. 10 Ed- 

 monst. in Mem. of Wern. Soc. 4. 5G1. SaUne in Trans. Linn. Soc. 12. 

 548 Steph. Shaw's Zool. 13. lf)5. 



Larus candidus, Flcm. Br. Anim. 1. 142. No. 3. 



La Mouette Blanche, Buff. Ois. 8. 422 Id. PI. EnL 994. 



Mouette Blanche, ou Senateur, Temm. Man. d'Ornith. 2. 769. 



Senator, Ray's Syn. 126. 1. 



Ivory Gull, Pen'n. Arct. Zool. 2. 457 Lath. Svn. 6. 377 Shaw's Zool- 

 13. 195 Bewick's Br. Birds, ed. 1826, p. t. 214. 



THE immaculate white which distinguishes the adult plu- Rare visi - 

 mage of the Ivory Gull, renders it one of the most beautiful 

 of the genus. In this country it is only known as a rare vi- 

 sitant, and the first authenticated instance of its capture is 

 that mentioned by LAURENCE EDMONSTON, Esq. as publish- 

 ed in the fourth volume of the Memoirs of the Wernerian 

 Society, where the bird (which appears to have been one of 

 the second year) is stated to have been shot in Balta Sound, 

 Shetland, in December 1822. Since that time it has been 

 killed, also in an immature state, in the Frith of Clyde. It 

 is a native of the northern Arctic Regions, and is found in 

 very high latitudes, being common in Greenland and Spitz- 

 bergen, where it breeds upon the rocks and cliffs that over- 

 hang the sea. Captain SABINE states it to be abundant in 

 Baffin's Bay, and Dr RICHARDSON also mentions it as fre- 

 quenting Davis^s Straits, and that it was discovered breeding 

 in great numbers on the high perforated cliffs that form the 

 extremity of Cape Parry in latitude 70. Except during the 

 breeding season, it is generally seen out at sea, often in com- 

 pany with the Fulmar, and is observed to be, like it, a con- 

 stant attendant upon the whale-fishery, greedily feeding up- Food. 

 on the blubber, which, with other carrion and animal matter, 

 constitutes its food. It is stated to possess little of that shy 



VOL. ii. i i 



