14 L. REEVE AND CO.’S PUBLICATIONS. 
SHELLS AND MOLLUSKS. 
—~—— 
ELEMENTS OF CONCHOLOGY ; an Introduction to the 
Natural History of Shells, and of the Animals which form them. By 
Lovett REEVE, F.L.S. Royal 8vo, 2 vols., 478 pp., 62 Coloured Plates, 
£2. 16s. 
Intended as a guide to the collector of shells in arranging and naming his 
specimens, while at the same time inducing him to study them with reference 
to their once living existence, geographical distribution, and habits. Forty- 
six of the plates are devoted to the illustration of the genera of shells, and 
sixteen to shells with the living animal, all beautifully coloured by hand. 
THE LAND AND FRESHWATER MOLLUSKS indi- 
genous to, or naturalized in, the British Isles. By Lovet. Rexve, F.L.S. 
‘Crown 8vo, 295 pp., Map, and 160 Wood-Engravings, 10s. 6d. 
A complete history of the British Land and Freshwater Shells, and of the 
Animals which form them, illustrated by Wood-Engravings of all the Species. 
Other features of the work are an Analytical Key, showing at a glance the na- 
tural groups of families and genera, copious Tables and a Map illustrative of 
geographical distribution and habits, and a chapter on the Distribution and 
Origin of Species. 
CONCHOLOGIA ICONICA; or, Figures and Descriptions 
of the Shells of Mollusks, with remarks on their Affinities, Synonymy, and 
Geographical Distribution. By Lovett Rexve, F.L.S, Demy 4to, pub- 
lished monthly in Parts, 8 Piates, carefully coloured by hand, 10s. 
Of this work, comprising illustrations of Shells of the natural size, nearly 
2000 Plates are published, but the plan of publication admits of the collector 
purchasing it at his option in portions, each of which is complete in itself. Hach 
genus, as the work progresses, is issued separately, with Title and Index; and an 
Alphabetical List of the published genera, with the prices annexed, may be pro- 
cured of the publishers on application. The system of nomenclature adopted 
is that of Lamarck, modified to meet the exigencies of later discoveries. With the 
name of each species is given a summary of its leading specific characters in 
Latin and English; then the authority for the name is quoted, accompanied 
by a reference to its original description; and next in order are its Synonyms. 
The habitat of the species is next given, accompanied, where possible, by par- 
ticulars of soil, depth, or vegetation. Finally, a few general remarks are offered, 
calling attention to the most obvious distinguishing peculiarities of the species, 
with criticisms, where necessary, on the views of other writers. At the com- 
mencement of the genus some notice is taken of the animal, and the habitats 
of the species are worked up into a general summary of the geographical distri- 
bution of the genus. 
