216 



PROCEEDINGS OP THE GEOLOGICAL SOCIETY. 



No. 4* List of Shells determined by Professor E. Forbes, 

 From beloiv the Tuff of Monte Nuovo. 





Range in fathoms. 



Remark. 





^ — 14. The presence of the Haliotis 

 — 4. alongwithArca barbataand 

 2—30. the Spondylus, indicates 

 — 40. that these shells were im- 

 2 — 50. bedded on a coast-line at 

 littoral. ivater mark. The others 

 were washed up. 





Cardita sulcata 



Venus verrucosa 



Modiola tulipa 







Shells in cavities of the columns. 



Lithodoraus lithophagus 



littoral. 



littoral— 4. 



littoral. 



Indicatecoast-line at water- 

 mark until certainty. 



Vermetus sublamellatus ? 



Shells from holes hi Tuff, 2)S feet above the Mediterranean, 



Area lactea 



— great depth. 



littoral— 4. 



httoral. 



[indicate a coast-line at 

 1 water-mark. 





Cast of Lithodomus 





Shells from Strata near the Temple of Serapis. 





littoral— 10. 



under 1 fathom. 



littoral. 



littoral. 



subliltoral. 



near coast-line ? 



littoral. 



5—40. 



0-55. 



0—27. 



sublittoral. 



0— very deep. 



littoral and deep. 



littoral. 



7—30. 



0—95. 



0—50. 



p 



0—16. 



littoral. 



littoral— 10. 



5—15. 



littoral— 40. 



littoral. 



The whole assemblage 

 in this case indicates the 

 line of water-mark, most 

 ^of the species being such 

 'as live there, only mingled 

 with those living imme- 

 diately below it and washed 

 up. 



J 



Bulla striata i 





Fissurella neglecta 



Trochus umbilicaris ? 



Scalaria lamellosa 



Cerithiuni furcatunj 





Columbella rustica . 





VprTTipt.ii'N P'io'as . 





NoEe 



— — barbata 



Cardita sulcata 





Lucina divaricata 



Vpnns ■frup'iUs 









TVrpsndpsTna donarplla 





1 



