Fig. 4 in Morphological study of members of the genus Echeneibothrium (Cestoda: Rhinebothriidea: Echeneibothriidae) from rajiform skates of the Argentine Sea and analysis of the phylogenetic relationships within the family Echeneibothriidae

Fig. 4. Cross sections of terminal mature proglottid of Echeneibothrium cristinae sp. nov. from Bathyraja cousseauae (paratype MACN-Pa No. 736/21). (A) Cross section at the level of testes. (B) Cross section at the level of cirrus sac. (C) Cross section at the level of seminal receptacle. (D) Cross section at the level of ovarian isthmus. Abbreviations: cs, cirrus sac; dod, dorsal osmorregulatory duct; ov, ovary; sr, seminal receptacle; t, testes; ut, uterus; vd, vas deferens; vf, vitelline follicle; vg, vagina; vod, ventral osmoregulatory duct.