PLATE VIII. 



Fig. 



1, ! Rimula clathrata, p. 86. 



1^> l c - magnified. 



2, 20. Rimula tricarinata, p. 86. 



2<5> 2c. magnified. 



3, 30. Rimulff Blotii,jo. 87. 



3^, 3e. magnified. 



4, 40, 4(5. Emarginula scalaris, jo. 88. 



4 ff - under surface magnified. 



5, 50. Fissurella acuta,j. 85. 



5^> ^ c - specimen magnified. 



6, 60. Nerita costulata, p. 57. 



fit' c - specimen magnified. 



7, la. Chemnitzia variabilis, p. 51. 



'* magnified. 



8, 80. Bulk undulata, p. 96. 



9, 96. Cylindrites acutus, p. 98. 



a - magnified. 



10, Cylindrites cuspidatus, p. 98. 



10 - magnified. 



11, 110. Cylindrites angulatus, p. 99. 



I**- magnified. 



12, 120. Cylindrites altus, ^. 99. 



12^- magnified. 



12*. Actaeonina? 



13, 1 30. Cylindrites brevis, p. 1 1 . 



*3*. magnified. 



14, Actseonina olivaeformis.jo. 103. 



15, Actaeonina bulimoides, jo. 104. 



16, 160, 16. Bulla loliolum,^. 96. 



17, 170. Cylindrites excavatus, p. 1UO. 



1^*- magnified section. 



18, 18*5. Cylindrites bullatus, />. 102. 



180, 18e. magnified. 



19, 190. Cylindritescylindricus, p. 100. 



L9 ^' - view of apex, and section of the same. 



20, 20/5, 20c, 21. Cylindrites pyriformis, p. 102. 



20 - magnified. 



22, 22. Cylindrites Thorenti, p. 1 01 . 



220, 22c. magnified. 



