22 CHECK-LIST OF NORTH AMERICAN BIRDS. 
[B 678, C557, R 676, C 789.] 
Groc. Dist.— Arctic regions; south in autumn and winter to 
Kamchatka, Point Barrow, Alaska, and Disco Bay, Greenland. 
Casual in England, Faroes, Helgoland, etc. 
Genus SBMA LeEacu. 
Xema LrEacu, Ross’s Voy. App. 1819, p. lvii. Type, Larus 
sabinit SAB. 
62. Xema sabinii (Saz.). 
Sabine’s Gull. 
Larus sabinit J. Sas. Trans. Linn. Soc. XII. 1818, 520, pl. 29. 
Xema sabini Leacu, App. Ross’s Voy. Baff. Bay. 4to ed. 18109, 
lvii. 
[B 680, C 558, R677, C 790.| 
Groc. Dist.— Arctic regions; in North America south in winter 
to New York, the Great Lakes, and Great Salt Lake; casual in 
Kansas, Bahama, and on coast of Peru. 
SuBFAMILY STERNINAS. TeErRNs. 
Genus GHLOCHELIDON Brenm. 
Gelochelidon BReEHM, Isis, 1830, 994. Type, G. meridionalis 
BREHM = Sterna nilotica HASSELQ. 
63. Gelochelidon nilotica (HassEtq.). 
Gull-billed Tern. 
Sterna nilotica HassE.a. Reise nach Pal. Deutsche Ausg. 1762, 
325: 
Gelochelidon nilotica StEJN. Auk, I. Oct. 1884, 366. 
[B 681, C 560, R 679, C 792.] 
Groc. Dist.— Nearly cosmopolitan; in North America chiefly 
along the Atlantic and Gulf coasts of the United States, breed- 
ing north to southern New Jersey, and wandering casually to Long 
Island and Massachusetts; in winter both coasts of Mexico and 
Central America and south to Brazil. 
