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Status Pallary (1916) erroneously treated "magna" as available name attributed to Férussac (1823), who solely used the word as descriptive term (Latin “big”), which he applied to many of his varieties. The name became nevertheless available from Pallary (1916) who associated the name with an illustration in Férussac (1823: pl. 7, fig. 16). The illustrated specimen is, however, the holotype (by monotypy) of Melanopsis dufourii Férussac, 1822 (Férussac used the same plates in both of his works and thus Pallary actually referred to the specimen illustrated as M. dufourii in the “Histoire naturelle”; see also introduction and Table 1 for details of Férussac’s publications). Therefore, Melanopsis magna Pallary, 1916 is a junior objective synonym of M. dufourii. [details]