6 GEOLOGICAL MEMOIRS. 



Pleurotoma tarentini, Ph. Buccinum granulatum, Ph. 



Payraudeaui, Desh. spinulosum, Ph. 



Maggiori, Ph. acuticostatum, Ph. 



turricula, Broc. pusillum, Ph. 



Renieri, Scac. exile, Ph. 



carinatum, Biv.fil, Columbella Greci, Ph. 



Cancellaria hirta, Broc. Mitra cupressina, Broc. 



coronata, Seac. Voluta rarispina, Lam. 



Fusus longiroster, Broc. Ancillaria obsoleta, Broc. 



clavatus, Broc. Conus Brocchii, Bronn. 



sealaris, Broc. demissus, Ph. 



rudis, Ph. Dentalium sexangulum, Gm. 



politus, Ren. multistriatum, Desh. 



Murex vaginatus, De Cr. et J. sulcatum, Lam. 



multilamellosus, Ph. substriatum, Desh. 



Ghenopus pes graculi, Bronn. tetragonum, Broc. 



desciscens, Ph. incertum, Desh. 



Strombus coronatus, Dfr, eoarctatum, Lam. 



Cassidaria striata. Sow. striatum, Lam. 



Purpura cyclopum, Ph. triquetrum, Broc. 



Buccinum seyratum, Broc. ovidum, Ph. 



musivum, Broc. 



Cirripeda, 



Chthalamus gigas. Pollicipes carinatus. 



We have therefore the following result : — 



Of 231 tertiary Conchifera ... 77, or 29 per cent, are extinct. 

 „ 13 „ Brachiopoda... 7, „ 54 „ „ 



„ 5 „ Pteropoda. None. 



„ 322 „ Gasteropoda... 107, or 31 per cent, are extinct. 

 yf 5 „ Cirripeda 2 „ 



Of 576 tertiary MoUusca 193, or 33 per cent, are extinct. 



Amongst the fossil species there are, however, several which exist 

 in other seas, although they are no longer met with in the Mediter- 

 ranean. The following is a list of these species : — 



Mya truncata, L. Greenland, the whole of the North Atlantic Ocean, and, ac- 

 cording to Brocchi, Tuscany. 

 Lutraria solenoides, Lam. The French coast, &c. 

 Tellina crassa, L. The North Sea. 

 Lucina columbella, Lam. Senegal. 

 L. pennsylvanica, L. The coast of America. 

 Cyprina islandica, L. The North Sea, Iceland, Canada. 

 Cardium fnans, Broc. The warm seas— Algiers. 

 Lima bullata, Turton. The North Sea. 

 Pecten medius, Lam. The Red Sea. 

 Ostrea edulis, L. The North Sea. 

 Patella vulgata, L. The North Sea. 

 Niso terehellum, Chemn. The Nicobar Islands. 

 Vermeius intortus, I^amk. The Antilles. 

 Trochus strigosus, Gm. The Coast of Morocco. 

 Fusus contrarius, L. The North Atlantic Ocean. 

 Buccinum undatum, L. The North Atlantic Ocean. 

 Terehra fuscata, Broc. Senegal. 

 Dentalium elephantinum, L. The Indian Seas. 

 D. multistriatum, Desh. The Indian Seas ? 

 D. eoarctatum^ Lamk. The English Channel. 



