Publisher's Synopsis
Excerpt from The Terrestrial Air-Breathing Mollusks, Vol. 5: Of the United States, and the Adjacent Territories of North America
Although this work forms a fifth volume to the Terrestrial Mollusks of the United States, I have endeavored to make it a complete manual of the subject. With this view, I have compiled from the writings of my father, my friend Mr. Bland, myself, and other authors all their more important portions, not only of descriptions and figures of Species, but of all that relates to the Habits of the Animals, their Geographical Distribution, their Jaw and Lingual Membrane, their Anatomy, and their Classification. I devote no space to Bibliography, referring to my gen eral work on that subject published by the Smithsonian Institution.
In the descriptive portion it will be seen that I have usually adopted the descriptions of genera and subgenera of Albers and Von Martens. From the same authors I have also usually adopted the generic and sub generic names, without inquiry into their precedence, having neither time nor inclination to attempt myself to disentangle the confused synonymy.
In the synonymy of the species I have quoted only authors giving an original description or an original figure. I have personally consulted all the references, unless otherwise specified.
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