287 
Tafel 23. 
1. Cerithium robustum Sow. — 2. 3. C. striatissimum Sow. — 4. 5. C. variegatum 
Sow. — 6. 7. C. citrinoides Eob. — 8. C. novae hollandiae A. Ad. — 9 C. graciliforme 
Sow. — 10 — 13, C. dubium Sow. (eludens Bayle). 
Tafel 24. 
1. Cerithium splendens Sow. — 2. 8. C. inoniliferum 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 Lara. — 8. 9. C, variegatum Sow. — 10. 11. C. kobelti Dkr. — 
12. 13. C. pfefferi Dkr. 
Tafel 28. 
1. Fastigiella carinata Bve. — 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. mörchi Ad. — 4. 5, C. bicarinatum Gray. — 
6. C. unicarinatum ßve. — 7. C. rissoideum Rve. — 8. 9. C. natalense Kob. — 10. 11. C. inae- 
quiseulptum Kob. 
Tafel 30. 
1. Cerithium kieneri Hrambr. — 2. 3. C. mascarenarum Kob. — 4. 5. C. mazatlani- 
cum Carp. — 6. 7. C. albonodosum Carp. — 8. 9. C. hanleyanum Rve. — 10. C. bom- 
bayanum Sow. — 11. C. iayardi 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 Rve. 
Tafel 32. 
1. Cerithium tryoni Kob. — 2. C. caledonicum Jouss. — 3 — 8. C. sulcatum Born, — 
9, C. obesulum Rve. — 10. C. placidum Rve. — 11. C. rhodostomum Rve, — 12. C. sero- 
tinum Rve. — 13. C. clathratum Rve. — 14. C. excavatum Rve. 
