48 GEOLOGICAL SURVEY OF CANADA. 



XXV. GELOCHELIDON Brehm. 1830. 

 63. Giill-billed Tern. Marsli Tern. 



Gelochelidon nilotica (Hasselq.) Stejn. 1884. 



Accidental on southern coast of New Brunswick. One shot at 

 Grand Manan, New Brunswick, August 1879. {Boardman.) 



XXVI. STERNA Linn^us. 1758. 

 M. Caspian Tern. 



Sterna tschegrava Lepech. i 770. 



A tolerably common summer migrant and breeds on many of 

 the islands off the coast of Newfoundland. {Reeks.) Very rare 

 in Nova Scotia. One specimen shot at Cole Harbour. (Downs.) 

 • One specimen procured at Moose Factory, Hudson Bay. Pack- 

 ard.) Not uncommon in the spring and autumn around Hamil- 

 ton Bay, Ont. {Mcllwraith) Rare on Great Slave Lake. {Ross!) 

 This species occurs as an occasional visitant to the coast of 

 Behring Sea, from the Yukon mouth to St. Michael at least, and 

 is undoubtedly found still more frequently south to the known 

 haunts of the species along the Pacific coast of Asia. {Nelson!) 



Breeding Notes. — This bird is occasionally shot in Toronto 

 marsh. It breeds abundantly on small islands in Lake Michigan. 

 On June loth, 1894, Mr. Van Winkle collected a number of 

 clutches for me on Gravel Gull Islands, Lake Michigan. Nests 

 singly in hollows in the sand, containing mostly three eggs each. 



Mr. Mcllwraith in "Birds of Ontario," says this species nests 

 singly, but he is mistaken, as it breeds in large colonies like 

 other Terns. {Raine) 



museum specimens. 



One specimen, bought with- the Holman collection. We have 

 two eggs purchased from Mr. Raine, said to have been taken on 

 Sewell Island, west of Manitoulin Island, Georgian Bay, Lake 

 Huron, July 2nd, 1891. 



65. Royal Tern. 



Sterna maxima Bodd. 1783. 

 Northward to Massachusetts and the Great Lakes. {A.O.U.List.) 



