141 



MARINE SHELLS. 



Sir R. Mtjechison, in his " SUurian System," p. 533, in describing the 

 northern drift of the Vale of Worcester, gives the following list of species 

 associated with the drift : — 



Buccinum fNassaJ reticulatum 



Dentalum entalis 



Littorina Uttorea 



Tellina solidtda 



Cardium tuberculatum 



Cyprina Islandica 



Turritella ungulina ? communia 



terebra 



With fragments of Venus, Astarte, Donax, and other genera, in too imperfect 

 a state to be specifically recognized. 



At Kempsey, near Worcester, were found : — 



Turritella wigulina ? communis 



Purpura lapillus 



Anomia ephippium 



Cyprota pediculus ? 



Trochus cinerarius 



Murex erinaceus 



Bulla ampulla ? oliva 



Ostrea edulis 



The following complete list of Shells, &c. from the drift at Strethill, is 

 from Mr. G. Maw's valuable paper on the " Severn Valley Drift," in the 

 Quart. Joum. Geol. Soc. , 1864 : — 



MoLLtrscA. 

 f Bivalves. J 



1. Anomia ephippium. A single valve, very soft. 



2. Ostrea edulis. Some very thick, others thinner and of younger growth. 



3. Pecten opercularis. Mostly small fragments. 



4. Mytilus edulis. 



5. modiolus. 



