naturalist and malacologist George Johnston (1797–1855) British malacologist Israel Heymann Jonas (1795–1851) German malacologist Louis Joubin (1861–1935) France Félix Pierre Jousseaume (1835–1921) France K Sally Diana Kaicher (1922–1999) United States, Author and Illustrator: Card Catalogue of Worldwide Shells, 1973-1992 E. Alison Kay (1928–2008) United States Myra Keen (1905–1986) United States Louis Charles Kiener (1799–1891) France Richard Kilburn (1942–2013) South Africa Thomas William Kirk (1856–1936) New Zealand Jared Potter Kirtland (1793–1877) United States Wilhelm Kobelt (1840–1916) Germany Yoshio Kondo (1910–1990) Hawaii Dieter Korn (1958–) Germany Christian Ferdinand Friedrich Krauss (1812–1890) Germany Endre Krolopp (1935–2010) Hungary, interested in Quaternary and Tertiary molluscs Tokubei Kuroda (1886–1987) Japan Heinrich Carl Küster (1807–1876) Germany L Henri de Lacaze-Duthiers (1821–1901) France Frank Fortescue Laidlaw (1876–1963) United Kingdom Jean-Baptiste Lamarck (1744–1829) France Charles Francis Laseron (1887–1959) United States, Australia Isaac Lea (1792–1886) United States José H. Leal Brazil Henning Mourier Lemche (1904–1977) Denmark Andrzej Lesicki (1950–)Poland Michele Lessona (1823–1894) Italy Mario Lessona (1855–1911) Italy John Lightfoot (1735–1788) United Kingdom David R. Lindberg (born 1948) United States Vasiliy Lindholm (1874–1935) Russia Karl Emil Lischke – :de:Karl Emil Lischke :fr:Karl Emil Lischke (1813–1886) Germany Arnould Locard (1841–1904) France Richard Thomas Lowe (1802–1874) United Kingdom Sven Ludvig Lovén (1809–1895) Sweden, marine zoologist and malacologist M Jules François Mabille (1831–1904) France Frank Mace MacFarland (1869–1951) United States, Hopkins Marine Biological Station at Pacific Grove William Macnae (1914–1975) South Africa. Virginia Orr Maes (1920–1986) United States, malacologist associated with the Academy of Natural Sciences of Philadelphia August Wilhelm Malm (1821–1882) Sweden Hermann von Maltzan (1843–1891) Germany Katharina Mangold-Wirz (1922–2003) Switzerland Ernst Gustav Gotthelf Marcus (Ernesto) (1893–1968) Germany, Brazil, spouse of Eveline du Bois-Reymond Marcus Eveline Du Bois-Reymond Marcus (1901–1990) Germany, Brazil Bruce Marshall (1948–) New Zealand, taxonomist Patrick Marshall (1869–1950) New Zealand, geologist Eduard von Martens (1831–1904) Germany Friedrich Wilhelm Martini (1729–1778) Germany Thomas Martyn (1760–1816) England Charles Johnson Maynard (1845–1929) United States J. C. McConnell (1844–1904) United States James Hamilton McLean (1936–) United States James Cosmo Melvill (1845–1929) Great Britain Auguste Ménégaux (1857–1937) France Karl Theodor Menke (1791–1861) Germany Artie L. Metcalf (1929–2016) United States Friedrich Christian Meuschen (1719–1811) Germany Louis André Gaspard Michaud (1795–1880) France, malacologist, also known as Gaspard Michaud and as A. L. G. Michaud Jean-Louis Hardouin Michelin de Choisy (1786–1867) France Jesse Wedgwood Mighels (1795–1861) United States John Samuel Miller (1783–1873) Great Britain Pierre-Aimé Millet (1783–1873) France Adolph Modéer (1738–1799) Sweden Otto Franz von Möllendorff (1848–1903) Germany,