^2S 



cj MANUAL 



y\OuL^ OF THE 



LAND AND FRESH-WATER SHELLS 



THE BRITISH ISLANDS. 



WITH FIGURES OF EACH OF THE KINDS. 



WILLIAM TURTON, M.D. 



NEW EDITION", WITH ADDITIONS, 

 BY 



JOHN EDWARD GRAY, Ph.D., F.E.S. 



F.L.S., F.E.G.S., V.P.Z.S. & ENT. SOC, ETC. 



LONDON: 

 LONGMA.N, BROWN, GREEN, LONGMANS, AKD ROBERTS. 



1857. 



The right of translation is reserved. 



