PLATE 20 



Macrocallista maculata Linne. Boi'Titon, Florida. 2.5 Inches, p. 52. 



Macrocallista nimbosa Solander. Marco, Florida. 4 Inches, p. 52. 



Pitar fulminata Menke. Sanibel, Floridc.. Yoiing. 10 mm. p. 52. 



Pltar morrhuana Govild. Duxbury, Massachusetts. 2 inches, p. 52. 



Chlone pygmaea Lamarck. West Indies. 13 mm. p. 54. 



Chione mazyckii Dall. Off Charleston, South Carolina. 12 mm. p. 53. 



Chlone subrostrata Lamarck. 1 inch. p. 54. 



Chione pubera Val. West Indies. 3 inches. p. 53. 



Kellia rubra Montagu. 3 mm. p. 48. 



Lucina radians Conrad. Florida. 17 mm. p. 46. 



Cardlum pinnulatum Conrad. Maine. 12 mm. p. 49. 



Tellina angulosa Gmelin. West Indies. 42 mm. p. 58. 



