PLATE 50 



1. Maciilopeplxam Junonla Chemnitz. Gulf of Mexico. 3 inches, p. 128. 



2. Mitra barbadensls Gmelin. Tortugas. 2 inches. 



3. Mitra sulcata Gmelin. Florida Keys. 10 mm. p. 



4. Mitra puella Reeve. Palm Beach, Florida. 8 mm. 



5. Mitra floridana Ball. West Florida. 7 mm. p. : 



6. Olivella mutica Say. Beaufort, North Carolina. 



7. Olivella floralia Duclos. Palm Beach, Florida. 



8. Olivella nivea Gmelin. Lake Worth, Florida. 15 mm. p. 132. 



9. Oliva sayana Ravenel. West Florida. 2.5 inches, p. 131. 



10. Cymatosyrinx pagodula Ball. Off Barbados. 12 mm. p. 135. 



11. Marginella succinea Conrad. Gulfport, Florida. 17 mm. p. 131. 



12. Marginella fauna Sowerby. 12 mm. p. 131. 



13. Marginella pallida Linn6. Cuba. 15 mm. p. 130. 



14. Marginella catenata Montagu. Yamato, Florida. 3.5 mm. p. 150. 



15. Marginella minuta Pfeiffer. Palm Beach, Florida. 2.5 mm. p. 130. 

 16a, 16b. Marginella pallida Linn6. West Indies. 15 mm. p. 130. 



17. Clathodrillia ostrearum Stearns. Sanibel, Florida. 22 mm. p. 135. 

 18a, 18b. Marginella guttata Billwyn. Florida Keys. 1 inch. p. 130. 



19. Marginella denticulata opalina Stearns. Tarpon Bay, Florida. 8 mm. p. 130. 



20. Marginella avena Valenciennes. 12 mm. p. 130. 



21. Marginella denticulata Conrad. Florida. 8 mm. p. 129. 



22. Marginella apicina Menke. Lake Worth, Florida. 12 mm. p. 129. 



23. Oliva reticularis Lamarck. 2 inches, p. 131. 



24. Marginella aureocincta Stearns. West Florida. 4 mm. p. 130. 



25. Tethys protea Rang. Florida. 3 inches, p. 142. 



