Fig. 3 in Dendrodorididae (Heterobranchia, Nudibranchia) from Persian Gulf with a description of a new species of Doriopsilla and remarks on the family

Fig. 3. Histological cross sections of epidermis, digestive system, and part of the genital system of Dendrodoris nigra (W. Stimpson, 1855). A. Mantle. B. Head area with parts of the digestive system; the oral tube is marked with a star. C. Section behind the head region with parts of the genital system. D. Stomach with folded wall (arrow). E. Intestine. F. Ampulla. Abbreviations: Am = Ampulla; E = Empty unicellular gland; Ep = Epithelium; G = glandular vesicle with mucopolysaccharides (stained violet); LD = Labial disc; Oe = Oesophagus; Ph = Pharynx; Sgl = Salivary gland; Vgl = Vestibular gland; Rs = Receptaculum seminis.