PLATE 13 



Lyonsia floridana Conrad. Florida. 12 mm. p. 41. 

 Lyonsia hyallna Conrad. Connecticut. 18 mm. p. 41. 

 Lyonsia beana Orbigny. Sanibel, Florida. 17 mm. p. 

 Polymesoda floridana Conrad. Big Pine Key, Florida. 

 Cuspidaria gemma Verrill and Bush. Jupiter, Florida. 

 Crassinella mactracea Linsey. 6 mm. p. 43. 



Pandora gouldiana Dall. Duxbury, Massachusetts. 32 mm. p. 41, 

 Tellina aequistriata Say. Florida. 22 mm. p. 57. 

 Cyprlna islandica. Linne. New England, 3.5 inches, p. 42. 

 Astarte castanea Say. Sandy Hook, New Jersey. 23 mm. p. 43. 

 Modiolaria nigra Gray. Maine. 1 inch. p. 39. 

 .Cardita floridana Conrad. Sanibel, Florida. 1 inch. p. 44. 

 Venericardia borealis Conrad. Maine. 1 inch. p. 44. 

 Lima tenera Sowerby. Florida. 32 mm. p. 36. 



