Arion magnus, is a large terrestrial gastropod mollusk in the family Arionidae, the round back slugs.
Distribution This species occurs in the Spanish Pyrenees.
References
i Poch, Artur Bofill. "Un Arion nou. A. Torres Minguez." Butlletí de la Institució Catalana d'Història Natural (1923): 85–86. Bank, R. A.; Neubert, E. (2017). Checklist of the land and freshwater Gastropoda of Europe. Last update: July 16, 2017.
External links Borredà, Vicent, and Alberto Martínez–Ortí. "Arion (Kobeltia) luisae spec. nov.(Mollusca: Gastropoda: Pulmonata), un nuevo ariónido español." Boletín de la Real Sociedad Española de Historial Natural 109 (2014): 9-19.