TAB. VIII. 



Fig. 



1. Cerithium tricinctum (I}, page 69. 



1 a. front view of specimem from 

 Mammaliferous Crag. 



1 b. front view of specimen from 

 Red Crag. 



2. Cerithium tricinctum (?), back view of 



eroded specimen from Red Crag. 



3. Cerithium variculosum, p. 69. 



3 a. magnified portion. 



4. Cerithium trilineatum, j. 70. 



4 a. apex magnified. 



5. Cerithium tuberculare, p. 70. 



5 a. magnified portion. 

 5(5. var. subulatum. 



5 c. ,, nanum. 



6. Cerithium metaxa (?), p. 71. 



6 a. magnified portion. 



7. Cerithium cribrarium, p. 71. 



7 a. back view. 



7 <5. front view, another specimen. 



7 a a. magnified portion. 



8. Cerithium adversum, p. 72. 



8 a. magnified portion. 



9. Cerithium granosum, p. 73. 



10. Cerithium perpulchrum, p. 72. 

 10 a. magnified portion. 



Fig. 



1 1 . Scalaria Grcenlandica, p. 90. 



1 1 a. back view, var. . 

 11 b. front view, var. /3. 



12. Scalaria fimbriosa,^. 91. 



13. Scalaria hamulifera, p. 9 1 . 



14. Scalaria varicosa, />. 90. 



15. Scalaria frondosa, p. 92. 



16. Scalaria frondicula, p. 92. 



17. Scalaria foliacea,j9. 93. 



18. Scalaria subulata, p. 93. 



19. Scalaria clathratula, p. 94. 



1 9 a. front view. 

 19 b. back view. 



a a. magnified portion. 



20. Scalaria Trevellyana,j. 94. 



21. Scalaria obtusicostata, p. 95. 



22. Scalaria cancellata, />. 95. 



22 a. magnified portion. 



23. Fossarus sulcatus, p. 120. 



23 a. front view, var. a. 

 23 b. back view. 



23 a a. magnified portion. 



23 c. back view, var. lineolatus. 



23 d. front view. 



The lines indicate the size of the specimens. 



