Fig. 1 in A new species of Oopeltidae (Mollusca, Pulmonata, Arionoidea), with a revision of the subfamily Ariopeltinae and remarks on its affinities within the family and superfamily

Fig. 1. Ariostralis nebulosa, genital system. Abbreviations: ALB GL – albumen gland, G A – genital aperture, G ATR – genital atrium, OV – free oviduct, OVOT – ovotestis, PR – penis retractor muscle, SPOV – spermoviduct, SPT – spermatheca, Vag – vagina, VAG B – vaginal bulb, Vd – vas deferens, 1–4 indicate the successive parts of the penis. (From Sirgel 1985)