The ‘Demange drawings’: known and unknown malacological contribu- tions of Victor Demange (1870-1940)

In the Bavay archives a collection of drawings of Vietnamese land and freshwater snails is present, which have never been published. They originate from Victor Demange who had them made by a local raftsman. The drawings are here reproduced and some biographical data on Demange, and his contributions to malacology, are presented.This item is freely available and free to download from the Folia Conchyliologica website. The attached article is the published version.This item is freely available and free to download from the Folia Conchyliologica website. The attached article is the published version

A proposed solution to a lengthy dispute: what is Leptinaria (uni)lamellata (Mollusca, Gastropoda, Achatinidae)?

The taxonomic position and the publication dates of both Achatina lamellata Potiez & Michaud, 1835 and Helix unilamellata d’Orbigny, 1835 are discussed. The dispute concerning the correct publication date of Potiez & Michaud is analysed and a collation of their Atlas is compared to the sheets of their main text, leading to the most likely scenario that the name Achatina lamellata became available in October 1838. The discovery of material ex auctore of this taxon enables us to establish it as a junior synonym of d’Orbigny’s taxon, which was published in March 1838. The correct name is thus Leptinaria unilamellata (d’Orbigny, 1838).This is an open access article, available to all readers online. The attached file is the published version of the article