EXPLANATION OF PLATES. 



Plate L 



(All the specimens are in the collection of the Museum of Comparative 

 Zoology at Cambridge. The catalogue numbers are given. The illustrations 

 are slightly reduced.) 



Page. 



Figs. I and 2. Fusus aciiminatiis (1409, 1408), Eocene, Barton, England... 15 

 3 and 4. Fusus aciculatus, British type (1406, 1401), Eocene, Barton 



Cliff, England 13 



5. Fusus porrectus (1402), Eocene, Barton Cliff, England 11 



6. Fusih aciculatus, leading to F. porrectus (1400), Eocene, Hordle 



Cliff, England 13 



7. Fusus aspcr C1404), Eocene, Muddiford Harts, England 16 



8. Fusus asper (27733), Eocene. England 16 



9 and ID. Falsifusus serratus (1399, 1397), Eocene. Paris Basin 84 



11. Fusus porrectus (1402), Eocene, Barton Cliff, England 11 



12. Fusus porrectus (1400), Eocene, Hordle Cliff, England 11 



13. Fusus aciculatus, Parisian type (1410), Eocene, Parnes, France.... 17 



14. Falsifusus serratus (1405), Eocene. Paris Basin 84 



15. Fusus aciculatus, Parisian type (1411), Eocene, Paris. .■ 17 



16. Clavellofusus spiratus. young (1900) ■ 99 



17. Clavellofusus spiratus (27731 ) 99 



18. Clavellofusus tuberculatus (27732) loi 



19. Clavellofusus tuberculatus (type, 27729) loi 



20. Clavellofusus spiratus (2'/7^i) 99 



21. Clavellofusus macrospiratus ( 1097) 102 



22. Clavellofusus tuberculatus (27734) *• ^0^ 



23. Clavellofusus spiratus (type, 1096) 99 



24. 25 and 27. Clavellofusus macrospiratus ( 1097) 102 



26. Clavellofusus spiratus (27731 ) 99 



28. Clavellofusus macrospiratus (type, 27730) 102 



16-28. Lower Eocene, Paris Basin. 



(158) 



