PLATE XLVILI. 



Fia. Page. 



1. Scala (Cirsotrema) Jimbriosa {S.y. Wood). Coralliue Crag, Boyton. (York Museum) . 542 



2. Ditto. Waldriugfield. (A. Bell Collection) . . . . .642 



3. Ditto, var. exfimbriosa (Sacco). Eed Crag, Brightwell. (British Museum) . . 543 



4. Ditto, ditto. Waldriugfield. (York Museum) . . . . .543 



5. Scala {Cirsotrema) lameUosa (Brocchi). Miocene, Antwerp. (Norwich Museum) . 544 



6. Scala {Cirsotrema) fimbriosa y?iv. anglica, now Coi'alline Crag, Sutton. (British Museum) 544 



7. Scala (Acrilla) exsemicostaf a (Sacco). Newbournian Crag, Woodbridge. (York Museum) 556 



8. Scala {Cirsotrema) fuiiicnhts (S. V. Wood). Waltonian Crag, Little Oakley. (Harmer 



Collection) ........ 544 



9. Scala {Clathroscala) cancellata (Brocchi). Pliocene, Altavilla. (Harmer Collection) . 551 



10. Scala {Clathroscala) Woodii (Deshayes). Gedgrave (Ipswich Museum) . . 552 



11. Ditto. G-edgrave. (York Museum) . . . . . .552 



12 Scala [Cirsotrema) hamuiifera (S. V. Wood). G-edgrave. (York Museum) . . 545 



13. Scala (S^nniscala) Trevelyana (Leach). Eecent. (Norwich Museum) . . 528 



14. Ditto. Belfast Clays. (Jermyn St. Museum) . . . . .528 



15. Scala (Cirsofrema) sigiiata, de Boury, MS. Coralline Crag, Sutton. (Norwich Museum) . 546 



16. Ditto. Coralline Crag, Sutton. (York Museum) . . . . .546 



17. Scala {Fuscoscala) tenuicosta (Michaud). Eecent, E.xmouth. (Norwich Museum) . 540 



18. Ditto. Belfast Estuarine Clays. (York Museum) . . . .540 



19. Scala (Linctoscala) frondicula (S. V. Wood). Coralline Crag, Gredgrave. (Cambridge 



Museum) ........ 531 



20. Ditto. Coralline Crag, Boyton. (York Museum) . . . . .531 



21. Scala (Lamelliscala) frondosa (J. Sowevhy). Coralliue Crag, Sutton. (Norwich Museum) 532 



22. Ditto. Coralline Crag, Sutton. (Jermyn St. Museum) .... 532 



23. Scala (Gyroscala) inedifa, sp. nov. Sudbovu-n Church-walks. (York Museum) . 553 



24. Scala {Pliciscala) obtusicostafa (S. V. Wood). Coralline Crag, Sutton. (York Museum) . 554 



25. Ditto. Coralliue Crag, Sutton. (Harmer Collection) .... 554 



26. Sccda (Nobiliscala) belgica (Sacco). Selsey. (York Museum) . . . 539 



27. Sccda (Linctoscala) inclusa, de Boury, MS. Sudbourn Church-walks, (York Museum) . 542 



28. Scala (Hyaloscala) clathratnla (Gr. Adams). Eecent. (Norwich Museum) . . 556 



29. Ditto. Dogger Bank. (York Museum) . . • . .556 



30. Ditto. Eecent, Giroude. (Harmer Collection) ..... 556 



31. Scala (Spiniscala) aldebiana, Sacco. Bramertou. (Harmer Collection) . . 530 



32. Scala (Fuscoscala) Moorei, sp. nov. Waldriugfield. (Moore Collection) . . 541 



33. Scala (Turriscala) anglorum (Sacco). Waldriugfield. (British Museum) . . 550 



34. Sccda (Hyaloscala) minuta (J. Sowerby). Coralline Crag, Sutton. (Cambridge Museum) 555 



35. Ditto. Coralliue Crag, Sutton. (Norwich Museum) .... 555 



36. Ditto. Coralline Crag, Sutton. (Norwich Museum) .... 555 



37. Ditto. Coralline Crag, Sutton. (Norwich Museum) .... 555 



38. Scala (Plesioacirsa) Chatwini, de Boury, MS. Boyton. (York Museum) . . 557 



39. Ditto. Little Oakley. (Harmer Collection) . . . . .557 



