PLATE 55 



1. Detracia bulloldes Montagu. Florida Keys. 11 mm. p. 147. 



2. Auriciilastrum pellucens Menke. Sanibel, Florida. 18 mm. p. 145. 



3. Phytla myosotis Drap. 8 mm. p. 145. 



4. Crucibulum auricula spinosum Sowerby. Pllo., Florida. l.£ inches, p. 95. 



5. Melampus floridanus Shuttleworth. 7.5 mm. p. 146. 



6. Tralla pusllla Gmelln. 13 mm. p. 145. 



7. Melampus coffeus Linne. Florida. 18 mm. p. 146. 



8. Pedlpes mirabilis Muhlfeld. Palm Beach, Florida. 

 9a, 9b. Siphonaria naufragum Stearns. Eoynton, Florida. 



10a, 10b. Siphonaria alternata Say. Florida Keys. 8 mm. 



11. Melampus bidentatus Say. 10 mm. p. 146. 



IS. Melampus flavus Gmelin. 14 mm. p. 146. 



13. Dentalium semistriolatim Guilding. 29.5 mm. p. 



14a, 14b. Dentalium entale stimpsoni Henderson. 40 mm. p. 



15. Trlchotropls borealls costellarus Couthoviy. 19 mm. p. 103. 



16a. Dentalium occidentale Stimpson. Apical portion magnified, p. 72. 



16b-16d. Dentalium occidentale Stimpson. 26-31 mm. p. 72. 



17. Dentalium semistriolatum Guilding. 29.5 mm. p. 72. 



18a. Dentalium antillarum Orbigny. 20.5 mm. p. 71. 



18b. Same, showing sculptural detail, p. 71. 



19. Dentalium texaslana Philippi. 24. mm. p. 72. 



20. Pecten raveneli Dall. Florida. 30 mm. p. 33. 

 21a. Dentalium callithrix Dall. Juvenile 23.5 mm. p. 71. 

 21b. Same, enlarged sculptural detail, p. 71. 

 22. Cadulus carolinensis Bush. 8 mm. p. 73. 



