Digestive system, dorsal view, Peronia verruculata (unit #1), type specimens. The arrow indicates the orientation of the transitional loop A lectotype, Onchidium ferrugineum (MNHN-IM-2000-22951) B holotype, Onchidium elberti (SMF 45248) C holotype, Scaphis astridae (RBINS I.G.9223/MT.3822) D holotype, Scaphis carbonaria (MNHN-IM-2000-33708) E lectotype, Peronia gaimardi (MNHN-IM-2000-33705) F lectotype, Scaphis viridis (MNHN-IM-2000-22964). Scale bars: 4 mm (A–C), 5 mm (D–F). Abbreviations: ddg dorsal digestive gland, i intestine, pdg posterior digestive gland, st stomach.