114 Bulletin 34 



marina Sellius, Nat. Hist. Tered. tab. 2, f. 2, 3, 6, 1733. 

 Note. — The borings of this famous shipworm suggested to 



Brunei many years ago his method of tunnehng the 



Thames. First recognized as a bivalve mollusca by Sel- 



lius, in 1733. 

 Distribution. — Arctic Ocean to Florida. Recent. Gulf coast. 



West Fla., Galveston and the entire Texan coast. Very 



destructive to wooden wharves at Galveston. Found in 



driftwood, Texas coast, b}'^ Roemer, in 1849. 

 megotara Forbes and Hanley, Brit. Conch., i, p. 77, pi. 4, f. 6, 



pi. 18, f. I, 2, 1853 ; Sowerby, 111. Br. Shells, pi. i, f. 3 ; 



Tryon, Pr. A. N. S. Phila., p. 466, '62; Gould, Inv. 



Mass., Binney's ed., p, 30, f. 357, '70 ; Dall, Pr. U. S. N. 



M., 6, p. 337, '83; Bull. 37. U. S. N. M., p. 74, pi. 59. f. 



3, pi. 65, f. 127, '89 ; List Cameron Shells (MS.)- 

 Note. — Placed by Johnson in synonymy of Teredo nana 



Turton, (Conch. Insul. Brit., p. 16, pi. 2, f. 6, 7, 1822). 

 Distribution. — Arctic Ocean to Florida. Pleistocene to Recent. 



Gulf coast. — Cedar Keys, Fla. ; Cameron, La. 

 norvegica Spengler, Skriv. Nat. Selsk Kjobenhaven, 2, pt. i, p. 



102, pi. 2, f. 4-6, 1792 ; Gould, Inv. Mass., p. 29, f. 356, 



1870; Dall, Bull. 37, U. S. N. M.. p. 74, pi. 68, f. 2, '89 ; 



Johnson, Occ. Pa. Bost. S. N. H., 7, p. 81, 1915. 

 Distribution. — Northern Europe and New York to Florida. 



Gulf coast. — Manatee, West Fla. 

 thomsoni Tryon, Proc. A. N. S. Phila., p. 280, pi. 2,f. 3-5, 1863; 



Gould, Inv. Mass., p. 31, f. 358, 1870 ; Dall, Bull. 37, U. 



S. N. M., p. 74, pi. 59, f. 4, 1889 ; Johnson, Occ. Pa., 



B. S. N. PL, 7, p. 81, 1915. 

 Distribution. — Cape Cod, Mass., southward. Cited by Dr. 



Dall from West Fla. 

 (Lyrodus) chlorotica Gould, Inv. Mass., Binney's ed., p. 33, f. 



360, 1870; Dall, Proc. U. S. N. M., 6, p. 337, 1883; 



Bull. 37, U. S. N. M., p. 74, pi. 68, f. 3, 1889 ; Johnson, 



Occ. Pa., Bost. S. N. H., 7, p. 82, 1915. 



