30 BIRDS OF OHIO. 
the international boundary, before they were so fully settled, 
but positive evidence of the breeding of this species is lack- 
ing. 
13. (60.) Larus PHILADELPHIA (Ord.). 278. 
Bonaparte Gull. 
Synonyms: Larus capistriatus, L. bonapartii, Choicocepha- 
lus philadelphia, Sterna philadelphia. 
Bonaparte’s Rosy Gull. 
Audubon, Orn. Biog., IV, 1838, 212. 
This is the most common small gull, but it is only locally 
common during the migrations. It is said to breed on Gull 
Island in Lake Erie, but I have been unable to verify this 
statement. It was not found on the small islands north of 
our boundary. Migration dates are unsatisfactory and irreg- 
ular. The species probably reaches the state in late April. 
14. (62.) XeEma sapinit (Sab.). 279. 
Sabine Guill. 
Synonyms: Larus sabinii, Xema sabinei. 
Fork-tailed Gull. 
Wheaton, Ohio Agri. Report, 1860, 371, 379. 
This record is apparently based upon a single specimen 
in immature plumage captured in Cleveland harbor by Mr. 
R. K. Winslow, earlier than 1880, and preserved for a time 
in the collection of the Ohio Medical College. It had been 
destroyed previous to 1882. 
Subfamily StERNIN#. Terns. 
Seven species of terns occur in Ohio, the Common and 
Black being the only regular visitors in summer. Terns fly 
with the bill pointing down instead of forward, and the 
species which we find have a forked tail, while the gulls 
have a square cut tail. The terns dive into the water for fish. 
They also eat garbage, and the smaller ones, at least, feed 
upon insects after the fashion of the swallows. As scaven- 
gers they are useful birds, but doubly increase our debt to 
