Plate Xni. 



Fig. I. Tridentate pedicellaria, small form, of Asthenosoma variunt. Obj. o. Oc. I. 



— 2. — — — — - Hygrosoina hictilentum. Obj. o. Oc. o. 



— 3. — — large — - Calveria gracilis. Obj. o. Oc. I. 



— 4. Valve of a tridentate pedicellaria, short form, of Asthenosoma variunt. Obj. o. Oc. I. 



— 5. Tridentate pedicellaria, large form, of Aræosonia tesselatum. Obj. o. Oc. o. 



— 6. — — small — - — — Obj. o. Oc. o. 



— 7. — — long, narrow form of Phorntosoma placenta (Ingolf. St. 40). Obj. o. Oc. o. 



— 8. Valve of a large tridentate pedicellaria of Hygrosoma Petersii. Obj. II. Oc I. 



. o. — — — — — - Kaniptosonia asterias. Obj. II. Oc. I. 



. 10. — — — — — - Aræosonia Belli. Obj. o. Oc. I. The basal part was 



broken, is partly constructed, may be not quite correctly. 



— II. Valve of a small tridentate pedicellaria of Aræosonia Belli. Obj. II. Oc. I. 



12. — — large — — - Sperosonia Griinaldii. Obj. o. Oc. I. 



lo. — — small — — - Hygrosoina Petersii. Obj. II. Oc. I. 



14. — large — — - — luculentimi. Obj. II. Oc. I. 



IC. — — — — - Kaniptoso7na asterias (<'.Phormos.tenMe^>.Q.h.2i\\.St.2'j2]. 



Obj. II. Oc. I. 



16. Tridentate pedicellaria, short form, of Hygrosoma luculentum. Obj. 00. Oc. I. 



rj— 18. Valves of tridentate pedicellariæ of Calveria hystrix. Obj. II. Oc. o. 



ig. Developmental stage of a spine of Phorniosoma placenta. Obj. II. Oc. I. 



— 20. Valve of a globiferous pedicellaria of Hapalosonia pellucidujn, from the inside. Obj. II. Oc. I. 



— 21. Tridentate pedicellaria, larger form, of Kampiosoma asterias {^Phornios. tenue». Chall. St. 272). 



Obj. o. Oc. I. 

 22. Valve of tridentate pedicellaria af Aræosonia Belli. Obj. II. Oc. o. 



— 23. Triphyllous pedicellaria of Sperosonia Grimaldii. Obj. o. Oc. I. 



— 24. Globiferons pedicellaria of Hapalosoma pellucidum. Obj. o. Oc. o. 



— 25. Valve of globiferons pedicellaria of Hapalosonia pelliicidnni, from the side. Obj. II. Oc. I. 

 _ 26. — - tridentate — - '^^Asthenosoma gracile-» (Chall. St. 184). Obj. II. Oc. I. 



— 27. Tridentate pedicellaria, short form, of Asthenosoma Grubei. Obj. o. Oc. o. 



