754 NOTES ON NORTH AMKRKIAN SHELLS — STEAKNS. 



Class (lASTKOPODA. 



Family FASCTOLAIHID^E. 



Gemis FULGUR Montlort. 



Pulgur perversa Liiiuc. 



One good example. 



This form lias a wide distribution, and is one of the largest species 

 of marine gastroi)ods, the shell often attaining a length of 15 inches or 

 more. It is found as tar north as (Jape Hatteras, on the Atlantic side, 

 where it occurs between tide marks; thence southerly, along the coast, 

 to and around tlie extremity of the peninsula of Florida, and on the 

 shores of the (lulf of Mexico, in many localities, with Cuba as its south- 

 erly limit. At many places within the range of its distribution the 

 animal (softer parts) is used as an article of food. It is, however, for 

 the most part, tough aud indigestible, in these respects rivaling the 

 abalones or Haliotis of the Pacific coast, which are so largely used as 

 food by the Chinese, and also exported to China in great quantities for 

 culinary, or rather gastronomic purposes. 



Family LITTORINIDJE. 



Geuus LITTORINA Ferussac. 



Littoriua irrorata Say. 



Numerous specimens, living. 



This also is an abundant and widely distributed species, living not 

 only between tide marks, but frequently far above high-water line; it 

 occurs on the shore of Khode Island, thence along the shores southerly 

 around Florida and the Gult of Mexico to Texas and is credited to the 

 West Indies and the island of Jamaica. 



It is a solid and rather pretty form, and may be seen in localities 

 where it occurs, crawling up or attached to the stiff, wiry sedge grass 

 of the lagoons and salt meadows or marshes near the shore. 



Family NATKUD.F. 



Subgenus NEVERITA Kisso. 



Neverita duplicata Say, 



One dead beach-shell. 



A conmion form at many phu^es along the ocean and gulf shores from 

 Massachusetts r>ay to Texas ; occurs also at Vei'a Cruz. 1 have collected 

 numerous exami)les on Nahant and Chelsea beaches in the north, and 

 on both coasts of Florida, and on the i-'lorida Keys, in the south. 



LunutUi hrros Say. may be regarded as the Atlantic anah)gue of the 

 West American or Pacilie Linidfia LriciNii, though the latter attains a 

 much larger size than licro.s. So Xcverita duplicata may be considered 



