PLATE 38 



1, Cerlthiopsls metaxae Delia Chiaje. 9 mm. p. 105. 



8a, 2b. Cerlthiopsls subulata ;Jontagu. 9 mm. p. 105. 



3. Trlphora perversa nigrocincta C. B. Adams. 10 mm. p. 104. 



4. ■ Trlphora melanura C. E. Adams. Jamaica. 5 mm. p. 104. 



5. Trlphora turrls-thomae Dtllwyn. 6 mm. p. 104 



6. Cerlthiopsls greenl C. B. Adams. Sanlbel, Florida. 5 mm. p. 105. 



7. Cerlthlum florldanum Morch. 1.5 Inches, p. 106. 



8. Cerlthliim varlablle C. B. Adams. 12 mm. p. 106. 



9. Cerlthldea costata Da Costa. 9 mm. p. 107. 



10. Cerlthlum algicola C. B. Adams. 20 mm. p. 105. 

 11a, lib, lie. Cerlthlum llteratum Born. 20 mm. p. 106. 



12. Cerlthlum muscarum Say. Florida. 20 mm. p. 106. 



13. Cerlthlum eburneum Eruguiere. £5 mm. p. 106. 



14. Blttlum alternatum Say. 7.5 mm. p. 107 

 15a. Cerlthlum atratum Born. 1 Inch. p. 106. 

 15b. Same. Porto Rico. 26 mm. p. 106. 



16. Cerithidec. turrlta Stearns. Tamp^ Bay, Florida. 10 mm. p. 107. 



17. Cerithidea aguayoi Clench. Texas. 22 mm. p. 106. 



18. Modulus angulatus C. B. Adams. Fox Bay, Colon. 13 mm. p. 104. 



19. Llttorlna guttata Phllippl. Jamaica. 8 mm. p. 99. 



20. Tectarlus trochiformls Dillv.yn. Key 'A'est, Florida. 16 mm. p. 100. 



21. Cerlthlum minimum Gmelln. Florida. 15 mm. p. 106. 



22. Sella adamsl H. C. Lea, Florida. 10 mm. p. 105. 



23. Cerlthiopsls vlrginlca Henderson and Bartsch. 2.9 mm. p. 105. 



24. Cerlthlum lutosum C. B. Adams. Palm Beach, Florida. 9 mm. p. 106. 



25. Bittlum cerithiodes Dall. 3 mm. p. 107. 



26. Margarites olivacea Brown. New England. 6 mm. p. 80. 



27. Bittlum varium Pfeiffer. Florida. 5 mm. p. 107. 



28. Ancistrosyrinx elegans Dall. Florida reefs. 27 mm. p. 134. 



