Internal anatomy of Ventania avellanedae: (16) pallial complex; (17) genital system. (aa) adrectal area, (ag) albumen gland, (bc) bursa copulatrix, (bcd) bursa copulatrix duct, (e) epiphallus, (f) flagellum, (fo) free oviduct, (fpsc) fertilization pouch-spermathecal complex, (h) heart, (hd) hermaphroditic duct, (iz) interramus zone, (k) kidney, (mav) marginal afferent vein, (mc) mantle collar, (o) ovotestis, (p) penis, (pg) pallial gland, (pn) pneumostome, (pr) prostate, (prm) penis retractor muscle, (ps) penial sheath, (pu) primary ureter, (pv) pulmonary vein, (r) rectum, (so) spermoviduct, (su) secondary ureter, (up) ureteric pore, (v) vagina, (vd) vas deferens. Scale bar: 5 mm.