CATALOGUE OF EGGS OF BRITISH BIRDS, 137 



? 4. XEMA. 



? 1. Xema Sabini. Sabine's Gull. 



Xema Sabini, Leach. 

 Larus Sabini, Sabine. 

 Gavia Sabini, Macgill. 

 Xema collaris. Leach. 

 Sabine's Xeme, Eyton. 

 Sabine's Gull, Yarr. 



5. RISSA. 



1. RissA TRiDACTYLA. The Kittiwake Gull. B.M. 



Larus Rissia, Linn. ; Hewit. Brit. Ool. pi. 89. 



Larus tridactylus, Linn.; Thienem. Fortpji. Vog.Eur. t. 21. 



f. 1 ; Schinz, Eier, t. 11. f. 3, 4 ; Oken, Naturg. Nest. u. 



Eier, t. 6. f. 9. 

 Larus gavia, Larus canus, et Larus torquatus, Pall. 

 Gavia tridactyla, Boie. 

 Rissa Brunnicbii, Leach. 

 Cheimonea tridactyla, Kaup. 

 Rissa cinerea, Eyton. 

 Rissa tridactyla, Macgill. 

 Laroides tridactylus, Laroides rissa, et Laroides minor, 



Brehm. 

 Kittiwake, Mont. ; Lew. Br. B. ^ Eggs, pi. 43. f. 2. 

 Kittiwake Gull, Penn. ; Yarr. 

 Tarrock Gull, Mont. 



6. PAGOPHILA. 

 1. Pagophila eburnea. The Ivory Gull. 



Larus eburneus, Gmel. 

 Larus niveus. Mart. 

 Larus candidus, Fabr. 

 Cetosparactes eburneus, Macgill, 

 Pagophila eburnea, Kaup. 

 Gavia eburnea, Boie. 

 Gavia nivea, Brehm. 

 Ivory Gull, Selby; Yarr. 



