Bibliographical notes on de Folin & Bérillon's Malacological papers concerning "La Region Extrême S.-O. de la France" and related publications by de Folin and Barrois

Between 1874 and 1877 the marquis L. de Folin and F. Bérillon published several papers on the non-marine mollusks of the southwesternmost part of France. In this series of papers, for obscure reasons published under three different headings, various new nominal molluscan taxa are introduced. Their correct citing and dating is important therefore. Because these data cannot be found in the literature, we considered it useful to summarize the results of our bibliographical investigations. As a by-product of our studies some notes are given concerning certain papers by De Folin alone and a contribution which is attributable to Barrois. De Folin & Bérillon (1874-1877) published their "Catalogue", "Etudes" and "Contributions" in two journals, which are not wide-spread in libraries, viz., the "Bulletin de la Société de Borda à Dax" and the "Bulletin de la Société des Sciences & Arts de Bayonne". The former journal was published in annual volumes, whereas the first volume of the latter covers the period from 1874 to 1878. Most unfortunately we could not study a copy of the Bulletin de la Société des Sciences & Arts de Bayonne with wrappers or some other kind of information indicating the various parts in which the first volume of this journal had been published. Most papers of De Folin & Bérillon have also been published separately. We started from the principle that the separate edition appeared in the same year as the version published in a journal, unless other data contradict this view, as in (13) & (14) and (18) & (19). Some pages have not been published in a journal, e.g. (9). The Rijksmuseum van Natuurlijke Historie, Leiden, is abbreviated RMNH in the following text. "Catalogue"