J. p. Johnson— Fossil and Recent Shells, Cornwnll. 27 



During a brief visit to Hayle I came across an interesting deposit 

 overlooking the mouth of the river from the right bank. It is 

 exposed at the top of a quarry (marked " gravel pit " on the old 



six inch map), and is as follows : — 



f§.et.. 



{a) Clean sand with land shells 2" 



{b) Dirty compact sand with Helicella virgata and occasional broken 



mussel and cockle shells .. . ... ... ... ... ... Ig- 



(c) Clean sand with 2fe^*<?eto 5«r5ar« and cockle-shells ... ... 1 



{d) Layer of broken mussel-shells. 



{e) Pieces of killas in clay (rubble -drift), the top half foot sandy with 



fragments of mussel-shells ... ... ... ... ... 5 



(/) Killas. 



The most interesting feature is, of course, the layer of broken 

 mussel-shells, which is clearly the remains of an old kitchen-midden. 

 From it I obtained a neat little flint flake of the arrow-head type, 

 the tip of which had been broken ofl". From bed (6), which also 

 bears evidence of the presence of man, I obtained a shell of Helix 

 aspersa and a tooth which my friend Hinton has identified as 

 belonging to sheep. 



While speaking of flint flakes I may mention that I picked one 

 up near Godrevy and another on Carn Brea, At the latter place 

 there are a number of hut-circles, from the interior of which 

 numerous arrow-heads, scrapers, and other implements have been 

 exhumed. 



From the adjoining Eiviere Towans I obtained shells of the 

 following molluscs : — 



Vitrea nitidula (Drap.). Helix aspersa, Miill. 

 Pyramidula rotimdata (MilU.). ,, nemoralis, L. 



Hygroiuia granulata (Aid.). Cochlicopa lubrica, Miill. 



Helicella itala (L.). Glansilia bidentata, Strom. 



,, caperata (Mont.). Caryehium minimum, Miill. 



,, virgata (Da, C). Patella milgata, I^. 



,, bar bar a (L.). 



With the exception of Caryehium minimum, Coclilieopa luhrica, 

 Clausilia hidentata, and Hygromia granulata, they were all common. 

 One of the shells of Helicella barhara is nearly 19 mm. in length. 



I made one or two expeditions in search of living non-marine 

 molluscs, and the following list of the species I obtained may be 

 of service to compare with that of the fossil ones : — 



Testacella maugei, Fer. Helicella barbara (L.). 



Limax maximits, L. Hygromia granulata (Aid.). 



Agriolimax agrestis (L.). ,, hispida (L.). 



Amalia Sowerbyi (Fer.). ,, revelata (Fer.). 



Vitrina pellucida (MvlU.) . ,, rufescem (Penn.). 



Vitrea cellaria (Miill.). Acanthinula aculeata (Miill.). 



,, lucida {J)x?i^.). Vallonia pulchella (lAuW..). 



,, nitidula (Drap.). Helix aspersa, Miill. 



,, excavata (Bean). ,, nemoralis, L. 



Euconuliis fulva (Miill.). Cochlicopa lubrica (Miill.). 



Arion ater (L.). Fiipa cylindracea (Da C). 



Pyramidula rotimdata (Miill.). Claicsilia bidentata (Strom.). 



Helicella itala (L.). Caryehium minimum, Miill. 



,, caperata (Mont.). Ancylus Jlnviatilis, Miill. 

 ,, virgata (Da C). 



