PLATE XV 



Ensis directus Conrad 

 Tagelus gibbus Spengler 

 Yoldia limatula Say 

 Anomia simplex D'Orbigny 

 Pholas> truncata Say 

 Solemya velum Say 

 Astarte castanea Say 

 Pitar morrhuana Gould 



9. Pecten gibbus irradians Lamarck 



