PLATE 31 



1. Astraea longlspina splnulosa Lamarck. 65 mm, p. 82. 



2. Astraea longispina Lamarck. 40 mm. p. 82. 



3. Astraea tuber Llnne. Boca Raton, Florida. 2 



4. Tegula fasciata Born. Biscayne Bay, Florida. 



5. Astraea imbricata Gmelin. 40 mu. p. 82. 



6. Astraea americana Gmelin. Florida Keys. 1 ir 



7. Livona pica Linn6. West Indies. 2.75 inches. 



8. Calliostoma jujubinum Gmelin. West Florida. 



9. Astraea brevispina Lamarck. West Indies. 40 

 10. Astraea caelata Gmelin. Lantana, Florida. 3 

 11a, lib. Turbo castaneus Gmelin. Florida Keys. 30 mm. 



12. Calliostoma roseolum Dall. 9.5 mm. p. 79. 



13. Margarites groenlandicus Gmelin. Maine. 6 mm. 



14. Cochliolepls striata Dall. Palm Beach, Florida. 6.5 mm. p. 80. 



15. Lacuna vincta Montagu. Maine. 8 mm. p. 101. 



16. Calliostoma occidentalis Michels and Adams. Casco Bay, Maine. 13 mm. p. 79. 

 17a, 17b.Cochllolepis parasitica Stimpson. 2 mm. p. 80. 



18. Calliostoma euglyptum A. Adams. Sarasota, Florida. 18 mm. p. 79. 



19. Solariella obscura Couth. Casco Bay, Maine. 9 mm. 



20. Phasianella bella Pilsbry. Florida Keys. 2.5 mm. 



