Part 2

The definitions have been rendered more full and complete than before, and the Author has profited by some manuscript notes communicated by a scientific friend, to whom he desires to present his humble acknowledgments. Upwards of four hundred explanations have been given of words which did not appear in the former edition, three-fourths of which are of generic and subgeneric names.

A large number of notes, referring to the geographical distribution of the genera, have been added from the pen of Mr. G. B. Sowerby, Senior.

The plates have been carefully improved; and three, containing upwards of eighty figures, have been added.

On the whole, it will be found that the amount of matter has been nearly doubled; all the defects, as far as they have been discovered, have been removed, and every means used of making the present edition as useful as possible.

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NAMES OF AUTHORS ABBREVIATED.

Adans. Adanson. Author of "Voyages du Senegal."

Bl. Blainville. Author of "Manuel de Malacologie et de Conchyliologie," &c.

Brod. W. J. Broderip, Esq. Author of various descriptions of Shells in the Zoological Journal, &c.

Brongn. Brongniart. Author of "Memoire sur les terrains du Vicentin, d'Italie, de France, et d'Allemagne," &c.

Brug. Brugière. Author of "Dictionaire des Vers testacés, dans l'Encyclopédie," &c.

Cuv. The late Baron Cuvier. Author of "Regne Animal," &c.

Defr. Defrance. Contributor to the "Annales des Sciences Naturelles," &c.

Desh. Deshayes. Author of "Coquilles fossiles des environs de Paris," &c.

D'Orb. D'Alcide D'Orbigny.

Drap. Draparnaud. Author of "Histoire Naturelle des Mollusques terrestres et fluviatiles de la France," &c.

Fer. De Ferussac. Author of "Histoire Naturelle des Mollusques terrestres et fluviatiles," &c.

Flem. Fleming.

Gmel. Gmelin. Author of an edition of Linnæus's "Systema Naturæ," &c.

Guild. Rev. Lansdown Guilding.

Hübn. Hübner.

Humph. The late George Humphrey.

Lam. Lamarck. Author of "Animaux sans Vertebres," &c.

Lin. Linnæus. Author of "Systema Naturæ," &c.

Mont. Montague. Author of "Testacea Britannica," &c.

Montf. Montfort. Author of "Histoire Naturelle des Mollusques," &c.

Müll. Müller. Author of "Vermium terrestrium et fluviatilum," "Zoologiæ Danicæ," &c.

Ranz. Ranzani. Author of "Considerations sur les Balanes," &c.