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PLATE 71 



1. Cerithlopsls subulata Montagu. 12 mm. p. 105. 



2. Cerlthiopsis greenii C. B. Adams. 5 mm. p. 105. 



3. Trlphora perversa nlgrocincta Adams. 10 mm. p. 104. 



4. Bittlum alternatiom Say. 7 mm. p. 107. 



5. Sella adamsi H. C. Lea. 10 mm. p. 105. 



6. Turbonilla elegantula Verrill. p. 89. 



7. Odostomia bisuturalis Say. 4.7 mm. p. 90. 



8. Odostomia trlfida Totten. 4 mm. p. 90. 



9. Phytla myosotis Drap. yoxing. p. 145. 



10. Odostomia seminuda C. B. Adams. 3.8 mm. p. 90. 



11. Odostomia Impressa Say. 4.8 mm. p. 90. 



12. Onoba aculeus Gould, p. 97. 



13. Pyramidella producta Adams. 5 mm. p. 87. 



14. Melanella intermedia Cantraine. 7.5 mm. p. 86. 



15. Pyramidella fusca Adams. 5.5 mm. p. 87. 



16. Solariella obscura Couthouy. 7 min. p. 79. 



17. Hydrobia minuta Totten. 3.5 mm. p. 97. 



18. Skenea planorbis Fabricius. 1.4 mm. p. 98. 



19. Lacuna vincta Montagu. 8 mm. p. 101. 

 £0. Haminoea solitaria Say. 10 mm. p. 141. 



21. Cylichna alba Brown. 5 mm. p. 140. 



22. Acteon punctostriatus Adams. 4 mm. p. 138. 



23. Cylichnella oryza Totten. 4 mm. p. 140. 



24. Diaphana debilis Gould. 4 mm. p. 140. 



25,26. Retusa pertenuis Mighels, showing variations. 2.5 mm. p. 139. 



27. Acteocina canaliculata Say. 5 mm. p. 139. 



202 



