Figure 1. Anotochaetonoe michelbhaudi gen. and sp. nov. (A) Whole worm, lateral view; (B, C) anterior end, dorsal view; (D) anterior end, lateral view; (E) terminal view of the pharynx, showing papillae and teeth; (F) terminal view of anterior end, showing the buccal lips. (A, B, D, E) Holotype; (C, F) paratype. DL, dorsal lip; LL, lateral lips; VL, ventral lip. Scale bars are in mm.



Figure 5. Anotochaetonoe michelbhaudi gen. and sp. nov. inside the tube of the host. (A) Posterior end protruding from the tube of the host; (B) anterior end of symbiont in contact with body of host. Hh, head of host; Sh, head of symbiont; Sp, pygidium of symbiont. Scale bars are in mm. 



Figure 6. Lepidasthenia brunnea. (A) Anterior end, dorsal view; (B) anterior end, lateral view; (C) tube of the host cut to show the symbiont on one section (up) and the host tentacles in the other (down); (D) elytron; (E) detail of the external edge of elytron. Scale bars are in mm. 



Figure 7. Ophthalmonoe pettiboneae. (A) Anterior end, dorsal view, showing both the pigmentation and the elytra arrangement; (B) terminal view of the anterior end, showing the buccal lips; (C) elytron; (D) detail of the surface of the elytron with micropapillae; (E) living worm (lacking the posterior end) inside the tube of the host. Scale bars are in mm (except D).