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Part 1 & I. Now Reapy.. Parr Il]. mw rae Pans, 
Subscriptions are invited for 
z : 
MONOGRAPH 4 
OF THE 
LAND AND FRESHWATER MOLLUSCA 
OF THE 
BRITISH ISLES, 
e BY 
J WV TAY OR AE eS: 
Membre Honoraire de la Société Malacologique de France, 
President of the Conchological Society of Great Britain and Ireland, 
Editor of ‘‘The Journal of Conchology, 
ete.» efc.; 
WITH. THE ASSISTANCE OF 
W. DENISON ROEBUCK, F.L.S., the late CHAS. ASHFORD, 
AND OTHER WELL-KNOWN ‘CONCHOLOGISTS. 
Vou. I is Introductory, the first. part dealing with the DEFINITION OF Con- . 
CHOLOGY, HISTORY, CLASSIFICATION, NOMENCLATURE, SYNONYMY, SHELL, 
SPECIES, VARIETIES, &c., and is illustrated with numerous as in the text anda 
plate in colours. 
The second part concludes the consideration of the variations and monstrosities 
to which the shell is subject, treating upon Sinistrorsity, Scalariformity. Hyper- 
strophy, Heterostrophy, etc., etc., and “the Auxiliary Appendages of the shell, and _ 
is richly illustrated by figures in the text and a plate in colours. 
The third part, which will follow as quickly as practicable, treats upon the - 
Morphology and Anatomy of the animal inhabitant and its various systems of organs. 
Subscription, 5/- per part; post free, 5/3. 
Subscribers’ Names to be sent, with Subscription, addressed to the 
Author, Spring Bank, Horsforth, Leeds, or to Taylor Bros., 
Sovereign Street, Leeds. 
A full list of Subscribers will be printed at the completion of the work. 
‘Eo. be Sola. 
COLLECTION OF SHELLS, 
Of about 6,000 kinds (18,000 a 
For Particulars apply to 
M. “BONNE, CHAMBESY, GENEVA 
SWITZERLAND. hoe ; 
