183 



FURTHER NOTES ON THE BRITISH PLIOCENE NON- MARINE 



MOLLUSCA. 



By A. S. Kennard and B. B. "Woodward, F.L.S., etc. 



Read Wth December, 1900. 



It was scarcely to be hoped that in so well worked a deposit as the 

 Red Crag any additional records would be made, yet, as the result of 

 researches recently carried on, fresh material has been obtained, and 

 we consider that these results should be placed on record. In June, 

 1899, and in the same month of the present year, several days were 

 spent by one of us in carefully sifting the Bed Crag exposed in the 

 large pit at the Neutral Farm, Butley, commonly known as the 

 " Oyster " pit, since it is close to the inn of that name, and six species 

 of non-marine mollusca were obtained. 



The land and fresh-water shells do not occur in any particular band, 

 but are found scattered throughout the fossiliferous crag. 



1. Helix nemoralis, Linn. This species was represented by 

 a single example, which unfortunately fell to pieces, but there can 

 be no question of the identification. It has hitherto been unrecorded 

 from the Pliocene of England. We have the authority of M. van 

 den Broeck for stating that Helix Haesendoncki, Nyst., from the 

 Plioceue of Belgium, is identical with this species. 



2. Pupa muscorum (Linn.). Only two examples of this species have 

 hitherto been known from the Bed Crag, viz., one perfect specimen 

 in the Natural History Museum and one immature individual in the 

 Ipswich Museum. We have now the pleasure of recording another 

 mature example. All of these have been found in the Neutral 

 Farm pit. 



3. Succinea putris (Linn.). A single immature specimen of this 

 form was found. The only other eximple from the Bed Crag is in 

 the Ipswich Museum, and was found in the same pit. 



4. Limiosa pereger (Mull.). This species is represented by a single 

 immature example, which enables us to confirm Mr. A. Bell's record. 



5. Limn^a truxcatula (Mull.). Several examples were found. 



6. Planorbis marginatum, Drap. Two examples, both of which 

 are immature, were met with. Mr. H. W. Burrows has obtained 

 a shell of this species from the Bed Crag at Hollesley. It was found 

 in the same pit as the example of Eidota fraticum (Mull.). 1 



1 Proc. Malac. Soc. Lond., Vol. iii (1899), p. 191. 



VOL. IV. — MARCH, 1901. 13 



