Janulus pompylius was a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Gastrodontidae. Fauna Europaea This species is now considered to be extinct.Fontaine B., Bouchet P., Van Achterberg K., Alonso-Zarazaga M. A., Araujo R. et al. (2007). "The European union's 2010 target: Putting rare species in focus." Biological Conservation 139: 167-185. Table 2 on the page 173. . PDF.
Distribution This species was endemic to the island of La Palma, in the Canary Islands.
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