TAB. VIII. 



Fig. 



1. Ceritliium tricinctum (J), page 69. 



1 a. front view of specimen from 

 Mammaliferous Crag. 



1 b. front view of specimen from 

 Red Crag. 



2 . Cerithium tricinctum ( ?) , back view of 



eroded specimen from Red Crag. 



3. Ceritliium variculosum, p. 69. 



3 a. magnified portion. 



4. Cerithium trilineatum,^. 70. 



4 a. apex magnified. 



5. Ceritliium tuberculare, p. 70. 



5 a. magnified portion. 

 5 b. var. subulatum. 



5 c. ,, nanum. 



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



6 a. magnified portion. 



7. Cerithium cribrarium, /;. 71. 



7 a. back view. 



7 b. front view, another specimen. 



7 a a. magnified portion. 



8. Cerithium adversum, p. 72. 



8 a. magnified portion. 



9. Cerithium granosum,j». 73. 



10. Cerithium perpulchrum, p. 72. 

 10 a. magnified portion. 



Fig. 

 11. 



12. 

 13. 

 14. 

 15. 



16. 



17. 



18. 

 19. 



20. 

 21. 



22. 



23. 



Scalaria Groenlandica, p. 90. 

 11 a. back view, var. a. 

 113. front view, var. |3. 



Scalaria fimbriosa, p. 91. 



Scalaria hamulifera, p. 91. 



Scalaria varicosa, p. 90. 



Scalaria frond osa, p. 92. 



Scalaria frondicula, p. 92. 

 Scalaria foliacea, p. 93. 



Scalaria subulata, p. 93. 



Scalaria clathratula, p. 94. 

 19 a. front view. 

 19 b. back view. 



a a. magnified portion. 



Scalaria Trevellyana, jo. 94. 

 Scalaria obtusicostata, p. 99. 



Scalaria cancellata, p. 95. 



22 a. magnified portion. 



Fossarus sulcatus, p. 120. 



23 a. front view, var. a. 

 23 b. back view. 



23a«. magnified portion. 



23 c. back view, var. lineolatus. 



23 d. front view. 



The lines indicate the size of the specimens. 



