Plate XIII. 



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



— 2. — — — — - Hygrosoma luctilentimi. Obj. o. Oc. o. 



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



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



— 5. Tridentate pedicellaria, large form, of Arceosoina tesselatiuii. Obj. o. Oc. o. 



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



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



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



— 9. — — — — — - Kaniptosoma asterias. Obj. II. Oc. I. 



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



broken, is partly constructed, ma}' be not quite correctly. 



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



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



— 13. — — small — — - Hygrosoma Petersii. Obj. II. Oc. I. 



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



— 15. — — — — — - Kamptoso7naasterias{<'.Phorinos.ienuei>.Q.\\a.\\.St2']2). 



Obj. II. Oc. I. 



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



— r7 — 18. Valves of tridentate pedicellarise of Calveria hystrix. Obj. II. Oc. o. 



— 19. Developmental stage of a spine of Phonnosoma placenta. Obj. II. Oc. I. 



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



— 21. Tridentate pedicellaria, larger form, of Kamptosoma asterias (<Pkormos. tenner'. Chall. St. 272). 



Obj.o. Oc. I. 



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



— 23. Tripliyllous pedicellaria of Sperosoma Grimaldii. Obj. o. Oc. I. 



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



— 25. Valve of globiferous pedicellaria of Hapalosoma pellucidum., 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. 



