42 CHECK-LIST OF NORTH AMERICAN BIRDS. 
SuBraMILy STERNINZ. Terns. 
GENUS GELOCHELIDON Breum. 
Gelochelidon BreuM, Isis, XXIII, 1830, 994. Type, by monotypy, Lach- 
seeschwalbe, Brehm, Gelochelidon meridionalis BREHM = Sterna nilotica 
LINN US. 
Gelochelidon nilética (LINNUS). Gull-billed Tern. [63.] 
Sterna nilotica LinNmus, in Hasseiquist, Reise Palast., 1762, 328. 
(River Nile, near Cairo, Egypt.) 
Rance.— Nearly cosmopolitan. Breeds in North America on 
coasts of Texas, Louisiana, North Carolina, Virginia (formerly to New 
Jersey), and in the Bahamas; wanders casually to Maine and Ohio; 
winters in southern Mexico, southern Guatemala, and from Brazil 
south to Patagonia and Chile. Breeds also in Europe, Asia, and 
Australia, and winters south to northern Africa. 
GENus STERNA LINN ZUs. 
Sterna Linnzwus, Syst. Nat., ed. 10, I, 1758, 187. Type, by subs. desig., 
Sterna hirundo Linnazvus (Gray, 1840). 
SuBGENUS THALASSEUS Bolt. 
Thalasseus Bor, Isis, X, 1822, 563. Type, by subs. desig., Sterna caspia 
Pauuas (Gray, 1855). 
Stérna c4spia PaLLas. Caspian Tern. [64.] 
Sterna caspia Pauuas, Novi Comm. Acad. Sci. Imp. Petrop., XIV, Pt. 
i, 1770, 582, pl. xxii, fig. 2. (Caspian Sea.) 
RancE.— Nearly cosmopolitan. Breeds in North America at 
Great Slave Lake, Klamath Lake, Oregon, on islands of northern Lake 
Michigan, on coast of southern Labrador, and also on coasts of Texas, 
Louisiana, Mississippi, South Carolina, and (formerly) Virginia; win- 
ters from coast of central California to Lower California and western 
Mexico (Colima), and on south Atlantic and Gulf coasts; casual in 
migration north to Alaska, James Bay, and Newfoundland. 
