(Discount to direct purchasers.)
THESAURUS CONCHYLIORUM;
OR MONOGRAPHS OF RECENT SHELLS.
Parts 24 and 25 will be published before Christmas, 1865, containing additions to former Monographs, and some new Monographs;
Completing Vol III. and the First Series.
The New Series, to be commenced early next year, will appear under improved conditions, and will be carried to a completion in as small a compass and as short a time as possible.
ILLUSTRATED INDEX OF BRITISH SHELLS.
Cloth gilt, Imperial.
700 coloured figures of 600 species, with names, localities, and other information.
NEW PROPOSED WORK, BY G. B. SOWERBY, F.L.S.