Fig. 11 in Interactive 3D anatomy and affinities of the Hyalogyrinidae, basal Heterobranchia (Gastropoda) with a rhipidoglossate radula

Fig. 11 Hyalogyrina depressa, histological details of genital system (semithin sections). (a) Overview: longitudinal section of gonoducts and associated structures, anterior is at right. (b) Detail: longitudinal section of proximal part of gonoduct. (c) Cross section of receptaculum seminis. (d) Longitudinal section of vesicula seminalis with autosperm. (e) Longitudinal section of bursa copulatrix with degraded allosperm. (f) Cross section of ovotestis lobes, each with inner ovary and outer testis portion. (g) Detail of f: spermatogenesis in peripheral portion of ovotestis. Labels: b = bursa, bs1/2 = blind sac1/2, dg = digestive gland, fs = allosperm, gd1/2/3 = proximal/median/distal portion of gonoduct, hd = hermaphroditic duct, n/n' = nucleus of ripe/ juvenile egg, nl = nucleolus, re = rectum, rs = receptaculum seminis, s = autosperm, sc = spermatocyte, spg = spermatogo- nium, x = degraded allosperm, yg = yolk granules