Stefan Clessin (13 November 1833, in

Würzburg Würzburg (; Main-Franconian: ) is, after Nuremberg and Fürth, the Franconia#Towns and cities, third-largest city in Franconia located in the north of Bavaria. Würzburg is the administrative seat of the Regierungsbezirk Lower Franconia. It sp ...

– 21 December 1911, in

Regensburg Regensburg (historically known in English as Ratisbon) is a city in eastern Bavaria, at the confluence of the rivers Danube, Naab and Regen (river), Regen, Danube's northernmost point. It is the capital of the Upper Palatinate subregion of the ...

) was a German

malacologist Malacology, from Ancient Greek μαλακός (''malakós''), meaning "soft", and λόγος (''lógos''), meaning "study", is the branch of invertebrate zoology that deals with the study of the Mollusca (molluscs or mollusks), the second-largest ...

. He served as a military officer, and from 1862 worked for the Bavarian railways. He was an editor of the ''

Malakozoologische Blätter Malakozoologische Blätter was a German-language journal for malacology. It was published from 1854 to 1891 as a continuation of '' Zeitschrift für Malakozoologie'' (which was published 1844–1853). Karl Theodor Menke and Ludwig Karl Georg Pfeiff ...

'' and made major contributions to

Martini Martini may refer to: * Martini (cocktail), a drink made with gin and vermouth, garnished with an olive or a lemon twist * Martini (vermouth), a brand of vermouth * Martini (surname), an Italian surname * Martini (automobile company), a Swiss auto ...

and Chemitz' ''Systematisches Conchylien-Cabinet''. He conducted research of fossil mollusks as well as living species.

Bibliography

* ''Die mollusken-fauna der umgegend von Augsburg'' (1871); Bericht des Naturhistorischen vereins in Augsburg, bd. XXI. * ''Ueber Missbildungen der Mollusken und ihrer Gehäuse'', (1873); Bericht of the Naturhistorischer Verein in Augsburg, 22. * ''Deutsche excursions-mollusken-fauna'', (1876), Nurnberg : Bauer & Raspe. * Clessin S. (1880). "Studien über die Familie der Paludinen". ''

'' (ser. 2)2: 161-196. * ''Die Molluskenfauna Oesterreich-Ungarns und der Schweiz'', (5 parts, 1887–90), Nürnberg : Bauer & Raspe.

Taxa described

Clessin named more than 90 species of non-marine

gastropod Gastropods (), commonly known as slugs and snails, belong to a large Taxonomy (biology), taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, freshwater, and fro ...

mollusk Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The ...

s, including:WoRMS: list of species named by Stefan Clessin
/ref> * '' Bythiospeum pfeifferi'' (Clessin, 1890) * '' Bythiospeum tschapecki'' (Clessin, 1882)

References

*Borcherding, F., 1912 Stephan Clessin.Nekrolog ''Nachrichtsblatt der deutschen Malakozoologischen Gesellschaft'' 24(2): 49-151. Biography, portrait, bibliography *Boeters, H. D., 1967 Die Publikationsdaten der Clessin's Molluskenfaunen. ''Mitteilungen der Deutschen Malakozoologischen Gesellschaft'' 10: 210-212. Bibliography *Jungbluth, J. H., 1995 Zur Geschichte der deutschen Malakozoologie, XXI: Die Deutsche Malakozoologische Gesellschaft - vom 19. Jahrhundert in das 21. Jahrhundert. 1868-1993: 125 Jahre Deutsche Malakozoologische Gesellschaft. ''Mitteilungen der Deutschen Malakozoologischen Gesellschaft'', 55: 1-18. Biography *Naturforscher im Landkreis Augsburg Von Heinz Fischer, Augsburg 24. Bericht der Naturf.Ges.Augsbg/ Seite 131 - 157 / 3. Nov. 1970 13
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in German includes portrait. 1833 births 1911 deaths German malacologists Scientists from Würzburg {{Germany-zoologist-stub