Fig. 20 in New species and new records of Melayonchis slugs (Gastropoda: Euthyneura: Pulmonata: Onchidiidae)

Fig. 20. Hollow spine of the accessory penial gland (A–D), and penial papilla (E, F), Melayonchis siongkiati, Darwin, Northern Territory, Australia. A, Scale bar = 100 μm, [5878] (NTM P.59485); B, Scale bar = 100 μm, [5877] (NTM P.59484); C, Scale bar = 100 μm, [5875] (NTM P.59483); D, Spine tip, scale bar = 8 μm, same as C; E, Scale bar = 100 μm, same as A; F, Scale bar = 100 μm, same as B.