66 JOURNAL OF CONCHOLOGY, VOL. 15, NO. 3, JULY, I916. 



occurrence oi Aiiadara dihwii m the Lenham beds as indicative of a 

 Miocene age, the same shell being found in the Miocene deposits of 

 Peel and Winterswyk in Holland, the rocks of the former place being 

 stated as the equivalent of the "Glimmertons " of the north of 

 Germany or the Tortonian stage of the Miocene, whilst the beds at 

 Winterswyk were regarded as Middle Miocene. This work also 

 included lists of molluscan species from the Upper and Middle 

 Miocene deposits of Holland, many of which are found in the Len- 

 ham beds. 



Another reference to the geological aspect of this subject has been 

 made by INIr. F. W. Harmer^ in an " Introduction " to a new work on 

 British Pliocene MoUusca, where he adheres to his previously 

 expressed views that the Lenham Beds with the " Box-Stones " and 

 the Belgian Diestian deposits should be grouped as Lower Pliocene 

 and that the Coralline Crag beds of East Anglia should form the base 

 of the Upper Pliocenes. 



A final notice to make involves a slight alteration in the views of 

 Mr. C. Reid" who, in a work recently published, places the Coralline 

 Crag and Lenham Beds in the Lower Pliocene group bracketing 

 them as equivalent to the Diestian — but the " Box-Stones " are 

 scheduled as Miocene. 



List of the Conchological Determinations. 



Gastropoda — 



The Families represented follow the order of Pelseneer's " Classi- 

 fication " (Ann. Soc. R. Mai. Belgique, 1894, vol. 27, pp. 31 — 243). 



Fissurellidce 



TrochidcB 



CapulidcB 



Cyprce-idcR 



Naticidcs 



Cerithiidce 



Scalidce 



Pyrain id el It dee 



Eulimidce. 



TurritellidcE. 



Xenophoridce 



AporrhaiidcB 



Fam. FISSURELLID^. 



Capiluna GRiECA Linnseus. [Plate 4, figs. 6, 7]. 



Patella graca Liimjeus : Syst. Naturse, 1758, ed. x., p. 784. 



1 The Pliocene Mollusca of Great Britain : Mon. Pal. Soc, 1914, part i, p. 5. 



2 C. & E. ]M. Reid : The Pliocene Floras of the Dutch-Prussian Border, Mededeel. Rijks. 

 Del/st., 1915, No. 6, p. 9. 



Cassididce 



Ficidce {=^PynilidcE) 



PusidcB 



Nassidce 



Muricidce 



Cancellariidce 



Vol lit idee 



Turridee {= Pleurotomidee) 



Terehridee 



ActeeonideB 



Ringieulid(z 



ScaphandrideB 



