PLATE VIII. 



Fig. 



1, la. Rimula clathrata, p. 86. 



\b,\c. — — magnified. 



2, 2a. Rimula tricarinata, p. 86. 



25, 2c. — — magnified. 



3, 3a. Rimula Blotii, j». 87. 



3(5, 3c. — — magnified. 



4, 4a, 45. Emarginula scalaris, p. 88. 



4c. — — under surface magnified. 



5, 5a. Fissurella acuta, p. 85. 



5(5, be. — — specimen magnified. 



6, 6a. Nerita costulata, p. 57. 



65, c. — — specimen magnified. 



7, 7a. Chemnitzia variabilis, p. 51. 



75. — — magnified. 



8, 8a. Bulla undulata,jo. 96. 



9, 95. Cylindrites acutus, p. 98. 



9a. — — magnified. 



10, Cylindrites cuspidatus, p. 98. 



10a. — — magnified. 



11, 11a. Cylindrites angulatus, p. 99. 



113. — — magnified. 



12, 12a. Cylindrites altus,j». 99. 



12(5. — — magnified. 



12*. Actseonina? 



13, 13a. Cylindrites brevis, p. 101. 



13(5. — — magnified. 



14, Actseonina olivaeformis, p. 103. 



15, Actaeonina bulimoides, p. 104. 



16, 16a, 165. Bulla loliolum,j». 96. 



17, 17a. Cylindrites excavatus, p. 100. 



17(5. — — magnified section. 



18, 185. Cylindrites bullatus, p. 102. 



18 a, 18 c. — — magnified. 



19, 19a. Cylindritescylindricus,j». 100. 



195, c. — — view of apex, and section of the same. 



20, 205, 20c, 21. Cylindrites pyriformis, p. 102. 



20a. — — magnified. 



22, 225. Cylindrites Tliorenti,^. 101. 



22a, 22c. — — magnified. 



