EXPLANATION OF THE PLATES. 533 



PLATE XIV. 



Opistho-branchiata. Pa<^e 



1. Tomatella tomatilis, L. Brit 313 



2. Cylindrites acutus, Sby Bath Oolite, Brit 313 



3. Acteonella Renauxiana, D'Orb. \. L, Chalk, France 314 



4. Cinulia avellana, Brongn. U. Greensand, Brit 314 



5. Tornatina voluta, Q,uoy sp. -|. I. Guam, Aiistralia 315 



6. Bulla ampulla, L. |. India 316 



7. {^tys) naucum, L f. Philippines 316 



8. Linteria viridis. Rang. Pitcairn Id 316 



9. Acera bullata, Miill. Brit 316 



10. Cylichna cylindracea, Mont. Brit 317 



11. Aplustriun aplustre, L. sp. |. Mauritius 318 



12. Scaphander Hgnarius, L. sp. K Brit 318 



13. Philine aperta, L. sp. Brit 318 



14. Aplysia depilans (hybrida, Sby.). Brit 320 



15. DolabeUa scapula, Martyn, sp. \. Mauritius 321 



16. Lobiger Philippii, Krohn. Sicily 322 



17. Pleurobranchus membranaceus, Mont. 2. Brit 322 



18. Umbrella umbellata, Diilw. \. Ma\iritius 323 



Kucleobranchiata. 



19. Carinaria cymbium, L. |. Medit 343 



20. Cardiapoda placenta, E. and S. ±. Atlantic 343 



21. Atlanta Peronii, Les. 22, operc. 23, fry. S. Atlantic 344 



24. Oxygyrus Keraudrenii, Rang. 25, operc. S. Atlantic 344 



26. Bellerophina minuta, Sby. Gault, Brit 345 



27. BeUerophon bi-carinatus, Lev. ^. Carb. Limestone, Torunay 344 



28. expansus, Sby. \. U. Silurian, Brit 345 



29. Porcellia Puzosi, Lev, -g-. Carb. Limestone, Belgium 344 



30. Cyrtolites ornatus, Conrad (cast) f . L Silurian, U. States 345 



31. Ecculiomphalus Bucklandi, Portl. J. Silurian, Tyrone . . . 345 



Fteropoda. 



32. Hyalea tridentata, Gmel. Atlantic — Medit 348 



33. Cleodora pyramidata, L. Atlantic 349 



34. Creseis aciculata. Rang. Atlantic 349 



35. Cuvieria columneUa, Rang. S. Atlantic 349 



36. Vaginella depreesa, JBasterot. -|. Miocene, Bordeaux 349 



37. Eurybia Gaudichaudi, Souleyet S. Pacific (Huxley) 350 



Z^. Psyche globulosa. Rang. Newfoundland 351 



39. Cymbulia proboscidea, Peron. Medit 351 



40. Tiedemannia Xeapolitana, Chiaje. Medit 351 



41. Limacina antarctica (J. Hooker). S. Polar Seas, 63° — 46° . . 351 



42. SpiriaKs bulimoides, D'Orb, sp. Atlantic 351 



43. Cheletropis Huxleyi, Forbes, A. S.E.Australia 352 



44. Macgillivraia pelaciga, Forbes. |. C. Byron, E. Australia . . 352 



45. Clio borealis, Brug, Arctic SeaS 353 



46. Spongio-branchaea australis, D'Orb. ^. S. Atlantic, Falk- 



land Ids 354 



47. Pneumodermon violaceum, D'Orb. A. S. Atlantic 353 



48. Trichocyclus Dumerilii, Esch, i-2.. South Sea 354 



49. Polagia alba, Q. and G. Amboina 3i)4 



60, Cj^nodocea diaphuua, D'Orb. Atlantic 354 



