8 CHECK LIST OF THE 
A rare summer visitor, occasionally straggling here from the 
prairie sloughs, where they are abundant. 
19. Bonaparte’s Gull. 
(Larus philadelphia.) 
A common spring and autumn visitor to the great lakes, arriving 
in April and departing at the end of November. It is probable that 
some breed in the northern part of the province. 
SUBFAMILY STERNINA. Terns. 
GENUS STERNA. 
Suscenus THALASSEUS. 
20. Caspian Tern. 
(Sterna caspia.) 
A regular but not common spring and autumn visitor to the 
great lakes. 
SuspGcENus ACTOCHELIDON. 
*21. Cabot’s Tern. 
(Sterna sandvicensis acuflavida.) 
The capture of a specimen of this tern in the spring of 1882, at 
Lucknow, is recorded by Mr. MclIlwraith. 
SuBGENUS STERNA. 
22. Forster's Tern. 
(Sterna forsteri.) 
An uncommon summer visitor, breeds throughout its range. 
23. Common Tern 
(Sterna hirundo.) 
A regular summer visitor, more frequently seen in spring and 
autumn. 
SuspGENUS STERNULA. 
24. Least Tern. 
(Sterna antillarum.) 
An accidental visitor. 
GENUS HYDROCHELIDON. 
25. Black Tern. 
(Hydrochelidon nigra surinamensis.) 
‘his Tern is common in some of the large marshes throughout 
the Province during the summer, but it is not generally distributed. 
Breeds where it occurs. 
