"Paraplanaria dactyligera musculosa" (in the original paper "Planaria dactyligera musculosa"), semidiagrammatic view of copulatory organs in sagital sections. aa, atrium of adenodactyl; ad, adenodactyl; b, copulatory bursa; bd, bursa stalk; gp, gonopore; m, mouth; mp; circular muscle layer of penis papilla; od, common oviduct; vd, vas deferens; vs, seminal vesicle.