APPENDIX. TAB. XXXI. 



Fig. 



1. Trophon Norvegicum 



2. Trophon Turtoni 



3. Trophon propinquum ? 



b, apex enlarged. 



4. Trophon Fabricii 



5. Nassa pygrnsea 



6. Pvrula acclinis 



b, a portion of the matrix, 

 with impression of the ex- 

 terior surface. 



7. Mitra ebenus, nat. size 



8. Mitra plicifera 



9. Cancellaria scalaroides 



10. Rissoa soluta 



11. Odostomia unidentata 



12. Rissoa Thermalis ? . 



b, apex enlarged. 



13, a, b. Lacuna vincta . 



14, a, b. Jeffreysia ? patula 



15, a, b. Helix ruderata . 



Page 



312 

 312 

 313 



313 



315 

 311 



310 

 311 

 316 

 318 

 317 

 319 



316 

 319 



309 



22 

 23 



25 



26 



16. Odostomia truncatula r 



17, a, b. Helix incarnata 



18, a, b. Paludina marginata 



19, a, b. Helix fruticum . 



20. Pecten polymorphus 



21. Mactra triangulata . 



d, hinge of right valve enlarged. 



a, exterior slightly enlarged to 

 show regularity of ridges. 

 Helix arbustorum 

 Pholadidea 

 24. Aplysia \ asciola 



a, b, outside and inside views 

 Pecten maximus 



var. larvatus. 



outside view of flat valve. 

 Lutraria rugosa 



a, inside view of left valve. 



b, outside view of right valve. 



Page 



318 

 309 

 320 

 308 

 323 

 324 



306 

 325 

 322 



323 



325 



Note. The lines denote the size of specimens. 





