174 LAREDO. 



The KITTIWAKE GULL. RISSA tridactyla, Leach. Larus 

 tridactylus, Linn. S. N. i. 224. PL enl. 387. L. 

 Rissa, Linn. L. torquatus, L. gavia, et L. canus, Pall. 



a. Scotland. From Col. Montagu's Collection. 



b. Great Britain. Presented by A. Cooper, Esq., R.A. 



c. Young. Yarmouth. 



d. Arctic Sea. 



e. West Greenland. Presented by the Admiralty. 

 /. Spitzbergen. Presented by the Admiralty. 



The YELLOW-BILLED GULL. RISSA nivea. Larus niveus, 

 Pall. Zoogr. n. t. L. braehyrhynehus, Gould. Proc, 

 Z. S. 184. 



a. North- West Coast of America ? Presented by John 

 Gould, Esq. 



The IVORY GULL. PAGOPHILA eburnea, Kaup. Larus 

 eburneus, Gmel. JS. N. i. 596. PL enl. 994. L. ni- 

 veus, Mart. L. candidus, Fabr. 



a. Arctic Sea. 



b. Arctic Sea. Presented by the Admiralty. 



c. Greenland. Presented by Capt. Sir E. Parry, R.N. 



d. ? 



c. RHYNCHOPIN^E. 



The BLACK SKIMMER. RHYNCHOPS nigra, Linn. S. N. i. 

 228. PL enl. 357. Wils. Am. Orn. t. 60. f. 4. Azara, 

 No. 408. R. cinerascens et R. brevirostris, Spix. Av. 

 Braz. t. 102, 103. 



a. Straits of Magellan. Presented by the Admiralty. 



. ? Presented by Capt. Lord Byron, R.N. 



c. d. Chili. Presented by C. Crawley, Esq. 



e. ? British Guiana. Presented by the Royal Geogra- 

 phical Society. 



The AFRICAN SKIMMER. RHYNCHOPS orientalis, Rupp. 



Faun. t. 24. 

 a. b. Quorra (African Expedition). Presented by Mrs. 



Heywood. 



