106 PROCEEDINGS OP THE MALACOLOGICAL SOCIETr. 



all beds of the London district/ but occurs in the Pleistocene gravels 

 of Barrington, Cambridge ; and I have lately had examples sent me 

 from a Neolithic rainwash at St. Catherine's Down, Isle of Wight. 

 In all probability it is a very recent introduction into the Home 

 Counties. The non-occurrence of Helicella cantiana fully bears out Mr. 

 B. B. Woodward's view that this species is of post-Roman introduction 

 into this country. Helix aspersa has been recorded from several Roman 

 deposits, and has been considered to have been introduced at that 

 time, but Mr. J. W. Flower notes - that it is constantly found in 

 British barrows in Wiltshire, and it occurs in the St. Catherine's Down 

 deposit. Mr. B. B. Woodward has also called my attention to the fact 

 that it is recorded from deposits resembling " kitchen middens" on 

 the shores of the Mersey, one mile from the present sea-shore,^ so that 

 its pre-Rouian existence in this country must be admitted. 



I Siuce this was written, a specimen has been obtained by Dr. Comer from the 

 Pleistocene deposit at Ilford. 



- J. W. Flower, F.G.S., " The Prehistoric Sepulchres of Alg-eria" : Transactions 

 of International Congress of Prehistoric Archeology, 1868, p. 209. 



3 C. Collingwood, Proc. Lit. and Phil. Soc. Liverpool, 1863, pp. 113-4. 



