PLATE S 5 



Tivela floridana Rehder. Yamato, Florida. 11 mm. p. 52. 



Petrlcola pholadlf ormls lata Dall. Beaufort, North Carolina. 1.75 Inches, 

 p. 56. 



Donax denticulatus Linne. Nicaragua. 28 mm. p. 62. 



Tagelus glbbus Spengler. 4 inches, p. 64. 



Slliqua costata Say. Swampscott, Massachusetts. 2 inches, p. 64 



Petrlcola pholadlformls Lamarck. Far Rockaway, New York. S.35 Inches, 

 p. 56. 



Rupellarla typica Jonas. Palm Beach, Florida. 1 inch. p. 56. 



Polymesoda floridana sarasotaensis Henderson. Tampa Bay^ Florida. 1.25 inch- 

 es, p. 43. 



Heterodonax bimaculatum Linne. 20 mm. p. 63. 



Donax variabilis Say. West Florida. 1 Inch. p. 62. 



Petrlcola lapicida Gmelin. Gordon Pass, Florida. 20 mm. p. 56. 



Asaphls deflorata Linn6. Miami, Florida. 2 inches, p. 63. 



Sanguinolaria sanguinolenta Gmelin. Jamaica. 40 mm. p. 63. 



Coralliophaga coralliophaga Gmelin. Bermuda. 1.5 inches, p. 56. 



Spisula polynyma Stimpson. Grand Manan, N. B. 3.5 inches. _p. 65. 



Barnea truncata Say. 28 mm. .p. 69. 



Tagelus divisus Spengler. New England. 1.5 inches, p. 63. 



