OKDEK LONGIPENNES. 43 



Subgenus ACTOCHELIDON Kwp. 



Actochelidon Kaup, Skizz. Entw.-Gesch. Bur. Thierw., 1829, 31. Type, 

 by monotypy. Sterna cantiaca Gmelin = S. sandvicensis Latham. 



Sterna maxima Bobdaert. Royal Tern. [65.] 



Sterna maxima Boddaekt, Table PI. Enl., 1783, 58. (Cayenne.) 



Range. — Tropical coasts north to United States. Breeds in West 

 Indies and on south Atlantic and Gulf coasts north to Virginia and west 

 to Texas; wanders casually to Massachusetts; not rare in summer 

 from San Francisco Bay south to western Mexico; winters from 

 Monterey, California, and Gulf of Mexico south to Peru and Brazil, 

 and on west coast of Africa from Gibraltar to Angola. 



Sterna elegans Gambel. Elegant Tem. [66.] 



Sterna elegans Gambel, Proc. Acad. Nat. Soi. Phila., IV, 1848 (1849), 

 129. (Mazatlan, Sinaloa, Mexico.) 



Range. — Pacific coast from San Francisco Bay south to Chile, 

 including Gulf of CaUfomia; accidental at Corpus Christi, Texas. 



Sterna sandvic§nsis Latham. 



Range. — Coast and interior seas of Europe, both coasts of Africa, 

 and eastern American coast from North Carolina to Brazil; also India 

 and Pacific coast of Central America. 



a. [Sterna sandvicensig sandvicensis. Extralimital.] 



6. Sterna sandvicensis acufl&vida Cabot. Cabot's Tem. [67.] 



Sterna acuflavida Cabot, Proc. Bost. Soc. N. H., II, 1847, 257. (Tancah, 

 Yucatan.) 



Range. — North and South America. Breeds from North Carolina to 

 Florida, Texas, and Mexico; winters from the Bahamas, Florida, and Louisi- 

 ana to Central America (both coasts), the Greater Antilles, Colombia, and 

 Brazil; accidental in Ontario, Massachusetts, New Jersey, and the Lesser 

 Antilles. 



