EXPLANATION OF PLATES. 425 



5, 6. Bucania, (Stachella) bifrons, Waagen. Salt Range, 



India, 323 



7. Bellerophina Yibrayi, d'Orb. Cret., Europe, . . 323 



8, 9. Maclurea Logani, Salter. Lower Silurian, Canada. 



Fig. 8 is a side view of the shell, exhibiting the sub- 

 spiral operculum ; fig. 9 represents the operculum with 

 its internal projections, ...... 324 



Plate 83. 



10. Haliotis Midse, Linn. Cape of Good Hope, . . 325 



11. Haliotis gigantea, Chemn. Japan, .... 325 



12. Haliotis (Teinotis) asinina, Linn. China, . . . 325 



13. Haliotis (Padollus) tricostalis, Lam. Austi'alia, . 325 



14. Haliotis (Sulculus) Janus, Reeve. Philippines, . . 325 



15. Fissurella picta, Gmelin. Straits of Magellan, . . 326 



16. Fissurella (Cremides) nodosa. Born. West Indies, . 326 

 It. Fissurella (Lucapina) crenulata, Sowb. West Coast 



North America, ...... . 326 



18. Fissurella (Flssurellidsea) hiantula, Lam. Cape of Good 



Hope, 327 



19. Fissurella (Macroschisma) maxima. Ads., . . . 327 

 20., Fissurella (Pupilla) apertura, Born, . . , . 327 



21. Parmophorus australis, Blainv. Australia, . . 329 



22. Lottia gigantea, Sowb. Panama to Mazatlan, . . 332 



23. Patella (Patinella) Magellanica, Gmel. Sts. Magellan, 334 



24. Patella (Nacella) cymbularia. Lam. Cape Horn, . 334 



25. Patella (Helcioniscus) exaratus,Nuttall. Sandwich Is., 335 



26. 27. Patella (Scutellastra) longicosta, Lam. Cape of 



Good Hope, 335 



28. Patella (Cymbulia)compressa, Linn. Cape Good Hope, 335 



29. Patella (Olana) cochlear. Born. Cape of Good Hope, 335 



Plate 84. 



30. Fissurella (Fissuridea) pileopsoides, Rve. Philippines, 326 



31. Fissurella (Clypidella) pustula, Linn. West Indies, . 327 



32. Rimula exquisita, Ads. Philippines, .... 327 



33. Rimula (Puncturella) Noaehina, Linn N. Europe, . 328 



34. 35. Rimula (Cranopsis) pelex, A. Ad. Japan, . . 328 



36. Semperia elegans, Crosse. Madeira, .... 328 



37. Emarginula fissura, Linn. Philippines, . . . 328 



38. Emarginula (Subemarginula) octoradiata, Sowb. West 



Indies, . . 328 



39. 40. Emarginula (Zeidora) reticulata, A. Ad. Japan, . 328 



41. Emarginula (Deslongchampsia) Eugenii,M'Coy. Oolite, 



England, . 328 



42. Lepeta cseca, Miill. Northern U. S., Europe, . . 331 



38 



