PLATE I. 



Fio. 

 1. 



2. 

 3. 



4. 

 5. 

 6. 



7. 

 8. 

 9. 



10,0. 

 10,3. 

 11. 



12. 

 13. 

 14. 



15. 



16,0. 

 16,3. 

 17. 



Names of the shells. 

 Rostellaria? gracilenta (nat. 



Localities from which the specimens figured 

 PAGE were obtained. 



size) 



Raphitoma submarginata (en- 

 larged) ....... 



Trophon muricatus, var. exosms 

 (enlarged) 



Pleurotoma liarpula (enlarged) 



gracilior (enlarged) 

 Columbetta abbreviata . 

 Pleurotoma nebula (enlarged). 



turris (nat. size) . 



Trophon antiquus, var. des- 



pectus (nat. size) . . . 



Columbetta erytkrostoma ? (nat. 



size) 



? (nat. 

 size) . 



Menestho Suttonensis (en- 

 larged) 



Odostomia Reevei (enlarged) . 

 Nodostoma ornata (enlarged) 

 eulimettoides (en- 

 larged) 



Margarita crassi-striata (en- 

 larged) 



Siliquaria parva (enlarged) . 



(enlarged) . 

 Pecten disparatus (nat. size) . 



1 Red Crag, Felixstowe (derived). 

 5 Red Crag, Felixstowe (derived). 



3 Red Crag, Felixstowe. 



5 ? Crag, Boy ton. 



4 Red Crag, Walton Naze. 



6 Red Crag, Foxhall. 

 4 Red Crag. 



3 Red Crag, Felixstowe (derived). 



2 Red Crag, Sutton. 

 6 Red Crag, Butley. 

 6 Red Crag, Butley. 



9 Cor. Crag, Sutton. 



9 Fluvio-marineCrag,Bramerton (derived?) 



8 Cor. Crag, Sutton. 



8 Cor. Crag, Sutton. 



10 ? Crag, Boyton. 



11} Fluvio-marine Crag, Bramerton (de- 

 ll ) rived?) 



12 Red Crag. 



