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Tafel 23. 

 1. Cerithium robustum Sow. — 2. 3. C. striatissimum Sow. — 4. 5. C. variegatum 

 Sow. — 6. 7. C. citrinoides Kob. — 8. C. novae hollandiae A. Ad. — 9 C. graciliforme 

 Sow. — 10 — 13. C. dubium Sow. (eludens Bayle). 



Tafel 24. 

 1. Cerithium splendens Sow. — 2. 3. C. moniliferum Kien. — 4. 5. C. siphonatum 

 Sow. — 6. 7. C. fenestratum Sow. — 8. 9. C. turritum Sow. — 10. 11. C. bermudae 

 Sow. — 12. 13. C. lacteum Kien. 



Tafel 25. 

 1—5. Cerithium australe Quoy. — 6 — 9. C. zonale Brug. — 10 — 13. C. multiforme 

 Lischke. 



Tafel 26. 

 1 — 5. Cerithium cumingii Crosse. — 6. 7. C. aterrimum Dkr. — 8. 9. C. atramenta- 

 rium A. Ad. — 10. C. incisum Sow. — 11. C. anguliferum Sow. — 12. C. subviride Sow. 



Tafel 27. 

 1. Cerithium musicum Sow. — 2. 3. C. literatum Born. — 4. 5. C. adansoni Kien. — 

 6. 7. C. semiferrugineum Lam. — 8. 9. C. variegatum Sow. — 10. 11. C. kobelti Dkr. — 

 12. 13. C. pfefiferi Dkr. 



Tafel 28. 

 1. Pastigiella carinata Rve. — 2. 3. Cerithium matukense Wats. — 4. 5. C. phoxum 

 Wats. — 6. 7. C. lissum Wats. — 8. 9. C. scabridum Phil. — 10—13. C. pingue A. Ad. 



Tafel 29. 

 1. 2, Cerithium freytagi Kob. — 3. C. morchi Ad. — 4. 5. C. bicarinatum Gray. — 

 6. C. unicarinatum Eye. — 7. C. rissoideum Rve. — 8. 9. C. natalense Kob. — 10. 11. C. inae- 

 quiseulptum Kob. 



Tafel 30. 

 1. Cerithium kieneri Hombr. — 2. 3. C. mascarenarum Kob. — 4. b. C. mazatlani- 

 cum Carp. — 6. 7. C. albonodosum Carp. — 8. 9. C. hanleyanum Rve. — 10. C bom- 

 bayanum Sow. — 11. 0. layardi Ad. 



Tafel 31. 

 1. Cerithium uncinatum Gmel. — 2 — 4. C. armatum Phil. — 5. C. ravidum Phil. — 

 6. 7. C. suturale Phil. — 8. 9. C. dialeucum Phil. — 10. 11. C. spathuliferum Eve. 



Tafel 32. 

 1. Cerithium tryoni Kob. — 2. C. caledonicum Jouss. — 3 — 8. C. sulcatum Born. — 

 9. C. obesulum Eve. — 10. C. placidum Rve. — 11. C. rhodostomum Rve. — 12. C. sero- 

 tinum Eve. — 13. C. clathratum Rve. — 14. C. excavatum Rve. 



