MilacidaeMilacidae is a family of air-breathing, keeled, land slugs. These are shell-less terrestrial gastropod mollusks in the superfamily Parmacelloidea.This family has no subfamilies.DistributionThe distribution of the Milacidae includes the western Palearctic region.AnatomyIn the Milacidae family, the number of haploid chromosomes ranges from 31 to 35.GeneraGenera within the family Milacidae include:Milax Gray, 1855 - type genusTandonia Lessona & Pollonera, 1882CladogramThe following cladogram shows the phylogenic relationships of this family to the other families in the limacoid clade: