MARINE MOLLUSCA OP MADEIRA. 329 



EXPLANATION OF 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. 



Eig. L Cylichna spreta. 



2. Amphisphyra flava. 



3. Fhiline complanata. 



4. Philine trachyostraca. 



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



nified, showing sculpture. 



5. Fhiline desmotis. 



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



nified, showing sculpture. 



7. 7 a, 7 b. Doridium maderense. 



8. Pleurobranchus Bautzenhergi. 



9. Pleurobranchus Lowei. 



10. Nassa antiquata. 



11. Miirex {Ocinebra) medicago. 



12. Trophon Lowei. 



13. Bittiujn depauperatum. 



14. 14 a. Bittiiim incile. 



15. Cmcum atlantidis. 



16. Natica (Nacca) fiirva. 



17. Scalaria rhips. 



18. Scalaria aspera. 



19. Scalaria Fischeri. 



20. Scalaria Smithii. 



Plate 20. 



Fig. 21. Aclis vitrea. 



22. Aclis trilineata. 



23. Aclis tricarinata. 



24. Eulima fulva. 



25. Eulima sordida. 



26. Eulima hadia. 



27. Eulima rhaphium. 



28. Eulima trunca. 



29. Eulima inconspicua, 



30. Odostomia omphaloessa. 



31. Odostomia {Turbonilla) undata. 

 32]a, 326, 32 c, Schismope depressa. 



33. Montacuta triangularis. 



34. Coralliophaga Johnsoni. 



35. Teredo Ballii. 



LINN. JOURN. — ZOOLOGY, TOL. X5TI. 24 



