Sacoglossa Ihering, 1876 - sacoglossans Suborder Plakobranchacea Jensen, 1996 - non-shelled sacoglossans Superfamily Plakobranchoidea Gray, 1840 Family Plakobranchidae Gray, 1840 Genus Placobranchus Boïé, 1824, orth. inval. see Genus Plakobranchus van Hasselt, 1824