Description Figs. 2–6 Images and drawings of the new Gyrocotyle species. 2, Photomicrograph of Gyrocotyle haffii n. sp. holotype (NB: the specimen is immature) ex Harriotta raleighana, Goban Spur (13951/14); 3, Line-drawing of Gyrocotyle haffii n. sp., holotype; 4, Photomicrograph of Gyrocotyle discoveryi n. sp. holotype ex Hydrolagus mirabilis (Goban Spur; 15063/103a); 5. Line-drawing of Gyrocotyle discoveryi n. sp., holotype; 6, Gyrocotyle discoveryi n. sp. paratype ex Hydrolagus mirabilis (Goban Spur; 15066/124a). Scale-bars: 10 mm