PART IV. (Issued Feb. 20th, 1897). 
[ALL RIGHTS RESERVED.] 
A 
MONOGRAPH 
OF THE 
LAND & FRESHWATER 
MOLLUSCA 
OF THE 
BRITISH ISLES. 
BY 
JOHN W. TAYLOR, F.L.S., 
MEMBRE HONORAIRE DE LA SOCIETE MALACOLOGIQUE DE FRANCE, 
EX-PRESIDENT OF THE CONCHOLOGICAL SOCIETY OF GREAT BRITAIN AND IRELAND, 
LATE EDITOR OF THE “JOURNAL OF CONCHOLOGY ; ” 
&C., &C., &C. ; 
WITH THE ASSISTANCE OF 
W. D. ROEBUCK, F.L.S., THE LATE CHAS. ASHFORD, 
AND OTHER WELL-KNOWN CONCUOLOGISTS. 
LEEDS : 
TAYLOR BROTHERS, PUBLISHERS. 
1897. 
PRICE SIX SHILLINGS, 
