506 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Adult male.—Wing, 222-231.5 (230); tail, 166-214.5 (187.6); 

 exposed culmen, 36-40.5 (38.1); tarsus, 18-20 (19); middle toe, 

 17-18.5 (17.9).« 



Adult female.— Wing, 218.5-233 (230); tail, 138-215 (187.6); 

 exposed culmen, 36-40 (38.1); tarsus, 18.5-20 (17.9).° 



Atlantic coast of United States, West Indies, and greater part of 

 Eastern Hemisphere; breeding, locally, from Sable Island, near 

 Nova Scotia, to Long Island (formerly from Maine to Florida), on 

 outer Bahama cays, islets about Guadeloupe, and in Grenada, for- 

 merly in Bermudas; migrating southward through West Indies 

 (where doubtless breeding on many islands) to coast of British 

 Honduras (Grassy Cay; Belize), Pacific coast of Oaxaca (Ventosa 

 Bay), Trinidad, and coast of Venezuela and Brazil; accidental in 

 Ohio and northwestern Indiana (Lake Michigan, near Miller's, Aug. 

 14, 1916) ; in Eastern Hemisphere breeding in Europe from about lat. 

 57° N. to Mediterranean Sea, Azores, and Madeira; also in Andaman 

 Islands, New Caledonia, etc., and occurring, at least during migra- 

 tions, along eastern coast of Asia from Liu Kiu Islands to Malay 

 Archipelago, Moluccas, New Caledonia (breeding), Australia, etc. 



{?)Larus polo-candor Sparrman, Mus. Carls., fasc. iv, 1789, no. 83 (Polo-Condor 

 Island, French Indo-Chiija.^ 



{?)Larus pulo-condor Latham, Index Orn. Suppl., 1801, p. Ixviii.— Vieillot, 

 Nouv. Diet. d'Hist. Nat., xxi, 1818, 497, 500. 



{?)Rissa polo-condor Reichenbach, Natatores, Novit., 1850, p. xi, pi. 274, fig. 

 2278. 



Sterna dougalli Montagu, Suppl. Orn. Diet., 1813, text and plate (no pagina- 

 tion; The Cumbraes, Firth of Clyde, Scotland; type now in coll. Liverpool 

 Mus.; see Forbes and Robinson, Bull. Liverp. Mus., ii, no. 2, 1899, 54). — 

 Leach, Syst. Cat. Mam., etc., Brit. Mus., 1816, 41. — Cuvier, Regne Anim., 

 Ois., 1817, 344, Atlas, pi. 93.— Temminck, Man. d'Om., ed. 2, 1820, 738; 

 ed. 1840, 4™'> pte. 457.— Boie, Isis, 1822, 563.— Meyer, Taschenb., iii, 



a Ten specimens (American). 



&See Sundevall, Kritisk Sparrm.. 1859, 13. 



