415
Part 4 : Helix, Nerita, Trochus, Pyrula, Psammobia, Pecten;in Part 5: Steganotoma and Cyclostoma , Fusus, Paludina,Haliotis, Tellina, Venus; in Part 6: Glandina, Trochus,Sigaretus, Haliotis, Cytherea; in Part 7 : Helix, Bulimus,Melania, Mactra, Cytherea, Venus; in Part 8 : Cylindrella,Trochus, Murex, Psammobia, Cytherea, Pecten. It appearshighly conducive to convenience, that with each genus themonth and year of publication are stated. Would thatFrench authors could be induced to attend to this little pre-caution ! Their Livraisons frequently appear altogetherwithout the date of the year.
In the year 1838 a work was published by Potiez andMichaud, under the title ‘ Galerie des Mollusques, ou Cata-logue methodique, descriptif et raisonne des Mollusques etCoquilles du Museum de Douaid The first volume containsthe Cephalopoda , Pteropoda, and Gasteropoda , a considerableportion of which has been figured in 37 plates. Thesecond volume has now appeared in the year 1844, con-taining the Brachiopoda , Testacea, and Tunicata ; conse-quently the second great division of the Mollusca . To thisvolume belong 33 lithographic plates. The text, for themost part, affords only the name of the species with thesynonomy and habitat. Some new species are described,and of these, as the work, perhaps, has not an extensive cir-culation, the diagnoses are given below.
In the Uebersicht der Arbeiten und Veranderungen derSchlesisclien Gesellschaft, fur vaterlandische Kultur , imJahre 1844, supplements to the Molluscous Fauna of Silesiaare given, by H. Scholtz. In these some species, and alsothe genus Pupula, Ag., are added to the Silesian Fauna.In an appendix is given an alphabetical list of the generaand species indigenous in Silesia, together with an accountof their distribution according to the different conditions ofaltitude. According to this there occur, in the plains, 91species; in lower declivities, 92 species; and in the moun-tainous regions, 25 species. Of the 135 species, arrangedin 26 genera, 78 in 14 genera are terrestrial, and 57 in