External morphology and digestive system, Wallaconchis sinanui, Indonesia, Ambon (A–C) holotype [2737] (UMIZ 00058) (D–F) [2738] (UMIZ 00059). A Dorsal notum B Anterior region, ventral view C Posterior region, ventral view D Digestive system, dorsal view E Digestive system, dorsal view (digestive gland removed) F Digestive system, ventral view (digestive gland removed). Abbreviations: a anus ddg dorsal digestive gland f foot fo female opening hn hyponotum i intestine mo male opening oddg opening of the dorsal lobe of the digestive gland oldg opening of the lateral lobe of the digestive gland opdg opening of the posterior lobe of the digestive gland ol oral lobe ot ocular tentacle pn pneumostome pdg posterior lobe of the digestive gland ppg peripodial groove st1 first stomach chamber st2 second stomach chamber st3 third stomach chamber st4 fourth stomach chamber. Scale bars: 2 mm (A, B, C); 1 mm (D, E, F).