EXrLAXATION OF THE PLATES. 533 



PLATE XIY. 



Opist/io-bra>ichu(ta. Page 



1. Tomatella tomatilis, L, Brit 313 



2. Cylindrites acutus, Sby. Bath. Oolite, Brit 313 



3. Acteonclla Eenauxiana, D'Orb. i L. Chalk, France 314 



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



5. Tornatina voluta, Quoy sp. |^. I. Guam, Australia 315 



6. Bulla ampulla, L. |. India 316 



7. {^^^ys) naucum, L |. Philippines '. . . 316 



8. Linteria riridis, Rang-. Pitcairn Id 3l6 



9. Acera buUata, Mlill. Brit 316 



10. Cylichna cylindracea, Mont. Brit 317 



11. Aplustrimi aplustrc, L. sp. \. Mauritius 318 



12. Scaphander Hgnarius, L. sp. -:• Brit 318 



13. Philine aperta, L. sp. Brit. " 318 



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



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



16. Lobiger Philippii, Krohn. Sicily 322 



17. Pleurobranchus membranaceus, Mont. 2. Brit 322 



18. Umbrella umbeUata, Dillw. \. Maiiritius 323 



Niicleohranchiata. 



19. Carinaria cymbium, L. f. Medit 343 



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



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



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



26. BeUerophina minuta, Sby. Gault, Brit 345 



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

 28. espansus, Sby. ^. U. Silurian, Brit 345 



29. Porcellia Puzosi, Lev. \. Carb. Limestone, Belgium 344 



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



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



Fteropoda. 



32. Hyalea tridentata, Gmel. Atlantic— Medit 348 



33. Cleodora pyi-amidata, L. Atlantic 349 



34. Crescis aciculata, Kang. Atlantic 3i9 



35. Cuvieria columnella, Pang. S. Atlantic 349 



36. Vaginella depressa, Basterot. -g. . Miocene, Bordeaux 349 



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



38. Psyche globulosa. Rang. Newfoimdland 351 



39. Cymbulia proboscidea, Peron. Medit 351 



40. Tiedcmannia Xeapolitana, Chiaje. Medit 351 



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



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



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



44. Macgilli-si-aia pelaciga, Forbes, j. C. Byi-on, E. Australia , . 352 



45. Clio borealis, Brug. Arctic SeaS 353 



46. Spongio-branchaja australis, D'Orb. -?-. S. xitlantic, Falk- 



land Ids 354 



47. Pneumodermon violaceum, D'Ox-fe. ^. S. Atlantic 353 



48. Trichocyclus Dumeiilii, Esch. J -Q-. South. Sea 354 



49. Pclagia alba, Q. and G. Amboina 3u4 



50. Cyinodocea diaphana, D'Orb. Atlantic 354 



^ A. 2 



