12 Catalogue of Canadian Birds. 



Gelochelidon nilotica. 



GULL-BILLED TEKN. 



Although said to be " nearly cosmopoHtan," this is merely an 

 accidental visitant to the waters of Canada. One specimen was 

 taken in the Bay of Fundy, in August, 1879, and a few have been 

 captured in the Great Lakes. 



Sterna tschegrava. 



CASPIAN TEKN. 



During the spring and fall migrations a few examples of this 

 species have been observed along the Atlantic coast and in the 

 Great Lakes. 



Sterna maxima. 



KOYAL TEKN. 



A few examples of this species have been taken in the Great 

 Lakes. 



Sterna sandvicensis acuflavida. 



CABOT'S TEKN. 



Three examples of this species were seen near Lucknow, 

 Ontario, by Dr. Garnier, in the autumn of 1881, and one of 

 them was secured. Its usual habitat is the tropical portions of 

 America. 



Sterna forsteri. 



rORSTER'S TERN. 



This species breeds aljundantly in the large lakes of Manitoba, 

 and a few breed regularly on the St. Clair Flats, Ontario. East- 

 ward of that locality it has been reported only at Lake Mistassini 

 (^Macouti) and Prince Edward 'Island (Cor)'). 



