MARINE MOLLUSCA OF MADEIRA. 329 



EXPLANATION OP THE PLATES. 



[The numbers beneath the figures correspond to those of the order of 

 description in the text and of enumeration in the list on p. 233.] 



Plate 19. 



Fig. 1. Cylichna spreta. 



2. Amphisphyra flava. 



3. Philine complanata. 



4. Philine traehgostraca. 



4 a. The same. Small portion of shell, highly mag- 



nified, showing sculpture. 



5. Philine desmotis. 



5 a. The same. Small portion of shell, highly mag- 



nified, showing sculpture. 



7. 7 a, 7 b. Boridium maderense. 



8. Pleurobranchus Bautzenbergi. 



9. Pleurobranchus Lowei. 



10. Nassa antiquata. 



11. Murex (Ocinebra) medicago. 



12. Trophon Lowei. 



13. Bittium depaupcratum. 



14. 14 a. Bittium incile. 



15. Ccecum atlantidis. 



16. Natica (Nacca) furva. 



17. Scalaria rhips. 



18. Scalaria aspera. 



19. Scalaria Fischer i. 



20. Scalaria Smithii. 



Plate 20. 



Fig. 21. Aclis vitrea. 



22. Aclis trilineata. 



23. Aclis tricarinata. 



24. Eulima fidva. 



25. Eulima sordida. 



26. Eulima badia. 



27. Eulima rhaphium. 



28. Eulima trunca. 



29. Eulima inconspicua. 



30. Odostomia omphaloessa. 



31. Odostomia (Turbonilla) undata. 

 32/*., 32 b, 32 c. Schismope dcpressa. 



33. Montacuta triangularis. 



34. Coralliophaga Johnsoni. 



35. Teredo Ballii. 



