“MONOGRAPH 
OF ‘THE 
LAND & FRESHWATER | 
-MOLLUSCA 
. OF THE 
be BRITISH ISLES. 
4 
Jonn W. TAYLOR, M.Sc. 
SMITASONIAN INSTITUTION 
Relea 25 B.S 
4 bet: 5 3 (wp. 65-112 ; sand pls. Vi; -Vil., Viil., and ay Price 7/6. 
Published October. 10, 1917. Rie +l Nine SMX 
Woe } 
ake 
i 
Ny 
AYLOR  BROS., PUBLISHERS, SOVEREIGN STREET, LEEDS, 
