300 



PKOF. J. PRESTWICH ON THE RAISED 



shells were determined by Gwyn Jeffreys. Those of the Thatcher 

 Eock were identified for Mr. Hunt by Dr. Jeffreys or by Mr. D. 

 Pidgeon and Mr. J. T. Marshall. 



List of the Mollusca of the Raised Beaches 



• 





Portland 



(Gwyn 



Jeffreys). 



Torquay 

 (A. E. 



Hunt). 



Bridg- 

 water ( W. 

 Baker). 



Barnstaple 

 Bay (G. 

 Jeffreys). 



1. Bivalves. 



Anomia ephippium, L 



Area, IcLctea, L. 



•55- 



... 



* 

 * 



* 



* 



■X- 

 * 

 * 



* 



■> 

 * 



* 

 * 



■56- 

 •X- 



* 



* 

 * 



* 

 * 



* 



Astarte sulcata, Da Costa... 

 Cardium edule, L 



echinatum, L 



papillosum, Poll 



■ norvegicum, Snengl.... 



Cytherea chione, F. &H.2... 



Cyprina islandica, L 



Cyamium minutum, Fabr. . 

 Lutraria elliptica, JjSim. ... 

 Mactra suhtruncata, Da 0. . 

 My a arenaria, L 



*' 







* 

 * 



■X- 



* 



Mytilus edulis, L 



modiolus, L.^ 



Modiolamarmorata, Forbes 

 Nucula micleus, L 



Ostrea edulis, L 



Pecten varius, L 



Pinna Tudis, D 



Solen vagina, L 



Tellina balthica, L 



Venus exoleta, L 



fasciata, Da Costa ... 



gallina, L 



Saxicava rugosa, Lam 



Ceratisolen legumen (?), L. . 



2. Univalves. 



Adeorhis subcarinatus,'M.oia.i. 

 Aporrhais pes-pelicani, L. . . . 



Buccinum undatum, L 



CerithiumreticidaUim,Dsi.C 

 Cylichna cylindracea, Penn. 



Lacuna futeolus, Turt 



Littovina littorea, IJ. ... 



ohtusata, L 



Tudis, Maton 



Fusus gracilis, Da Costa . . . 

 Jeffreysianus, Fisch.... 







1 



^ These are given on the authority of Mr. A. Bell. 

 2 Found at New Quay. 



