PLATE 11 



Mytilus edulis Llnne. 2.5 inches, p. 37. 

 Same, rayed form. p. 37. 

 2b. Modiolus opifex Say. 13 mm. p. 38. 



Mytilopsis leucopheata Conrad. Maryland. 12 mm. p. 39. 



Botula fusca Gmelin. 10 mm. p. 38. 



Mytilus exustus Linne. Pine Key, Florida. 1.5 inches, p. 37. 



Modiolus modiolus Linne. New England. 5 inches, p. 38. 



Modiolus tulipus Linn6. Biscayne Bay, Florida. 1.5 inches, p. 38. 



Modiolaria lateralis Say. 12 mm. p. 39. 



Cardita gracilis Shuttleworth. Tampa Bay, Florida. 20 mm. p. 44. 



Myrtaea lens Verrill and Smith. 10.5 mm. p. 48. 



Tellina candeana Orbigny. Bermuda. 10 mm. p. 59. 



X72 



