Israel Heymann Jonas (1795-1851) was a German malacologist. He studied medicine at the Christian-Albrechts-Universität in Kiel, Prussia.
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Species named by Jonas
The World Register of Marine Species has 53 records of marine species named by Jonas. Most of these names have become synonyms, except:
Species named in honor of Jonas
Hombron & Jacquinot naming a genus Jonas in honor of him; this is a crab genus in the family Corystidae. A number of marine gastropod species use the epithet "jonasii" or jonasi in his honor.
Publications
Jonas sometimes also published as "J." H. Jonas.
He studied, together with Wilhelm Dunker, the "Museum Gruneri", a large collection of species in the bivalve family Pteriidae. This study was published as Verzeichniß der Conchyliensammlung des verstorbenen Herrn Consul Gruner, welche im Ganzen verkauft werden soll von Bunsen Hausschild 1857. Bremer Druck 1857.
In 1846 Jonas described the "Rodatz collection". Rodatz collected many mollusks during a number of commercial expeditions from Germany to Zanzibar and West Africa in the period of 1843–51, and from the Red Sea in 1845. He had offered his specimens to Naturhistorisches Museum Hamburg.