FIGURES 13–18. Ahamulina catarina n. gen. n in Ahamulina n. gen. (Cestoda: Diphyllidea) from the polkadot catshark, Scyliorhinus besnardi (Carcharhiniformes: Scyliorhinidae), off Brazil

FIGURES 13–18. Ahamulina catarina n. gen. n. sp. from Scyliorhinus besnardi. Figs 13–17. Histological sections. 13. Sagittal section through scolex showing bothria free posteriorly for most of their length. 14. Cross section through proglottid at level of testes. 15. Cross section through proglottid at level of genital pore. 16. Cross section through proglottid at level of ovarian bridge. 17. Cross section through proglottid posterior to ovarian bridge. 18. Whole mount of egg; arrow indicates subterminal knob. Abbreviations: AO, apical organ; BO, bothrium; DEV, dorsal excretory vessel; GP, genital pore; MG, Mehlis' gland; O, ovary; OC, ovicapt; T, testis; UD, uterine duct; UT, uterus; V, vitelline follicle; VA, vagina; VEV, ventral excretory vessel; VR, vitelline reservoir.