30 GEOLOGICAL SURVEY OF CANADA. 



of Cumberland Gulf in June, 1871, and soon disappeared ; I 

 doubt if they breed there. {Kumelin.) Occasionally seen from 

 Greenland south along the Labrador coast {Packard) ; Newfound- 

 land {Reeks') ; coast of Nova Scotia {Downs) ; in the Bay of 

 Fundy {Boardman) ; Gulf of St. Lawrence {Dionne') ; occasionally 

 taken in Hudson Bay {Dr. R. Bell) ; south to Lapierre's House 

 on the Mackenzie River. {Ross.) Quite abundant along the Ander- 

 son River and on the Barren Grounds, and also on the Arctic 

 coast. {Macfarlane.) This is the most common of the Jaegers 

 on the Alaskan coast ; rare on the Prybiloff Islands. They are 

 abundant on the low coast of Behring Strait, but, except at 

 Kotzebue Sound, they are not common beyond that point. {Nel- 

 son.) Arrives earlier at St. Michael and in greater numbers than 

 its congeners ; rarely seen on the eastern Aleutian Islands, but 

 a few pairs are said to breed near St. Michael. ( Turner.) This is 

 the most common species of Jaeger at Point Barrow, and is rather 

 abundant, but none breed. {Murdoch.) Once shot and several 

 times seen during September, 1890 and 1891, at Sumas Lake, B.C. 

 {Brooks.) 



Breeding Notes. — The pairing occurs with a great amount 

 of noisy demonstration, on the part of several rivals, but once 

 paired the birds keep by themselves and early in June deposit 

 their eggs in a depression on the mossy top of some knoll upon a 

 rising ground. (Nelson.) 



museum specimens. 



One specimen procured at York Factory by Dr. R. Bell. 



One egg taken at George River, Ungava Bay, Labrador, by J. 

 Forde, 1896. 



Family V. LARID.S! Gulls and Terns. 

 XX. PAGOPHILA Kaup. 1829, 

 39. Ivory Gull. 



Pagophila alba {Gvmi,) Coues. 1897. 



A very rare periodical migrant on the northwest coast of New- 

 foundland. Three shot in Parson's Pond January 1867-68. 

 {Reeks.) One specimen observed in Halifax harbour prior to 

 1869. (/oties.) Rare along the Nova Scotia coast. (Downs.) 

 An immature bird shot at St. John ; a winter visitant at Grand 



