Plate XIII. 



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

 2. - Hygrosoma lucrtlentum. Obj. o. Oc. o. 



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



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



5. Tridentate pedicellaria, large form, of Arceosoma tesselatum. 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. - Kamptosoma asterias. Obj. II. Oc. I. 



10. - Arceosoma 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 Arceosoma Belli. Obj. II. Oc. I. 



12. large Sperosoma Grimaldii. Obj. o. Oc. I. 

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



14. large luculentum. Obj. II. Oc. I. 



15. - Kamptosoma asterias (<iPhormos. tenue^. Chall. St. 272). 



Obj. II. Oc. I. 



16. Tridentate pedicellaria, short form, of Hygrosoma hiciilentum. Obj. oo. Oc. I. 



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



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



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



21. Tridentate pedicellaria, larger form, of Kamptosoma asterias (Phonnos. temie^. Chall. St. 272). 



Obj. o. Oc. I. 



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



23. Triphyllous pedicellaria of Sperosoma Grimaldii. Obj. o. Oc. I. 



24. Globiferous pedicellaria of Hapalosoma pelhicidum. Obj. o. Oc. o. 



25. Valve of globiferous pedicellaria of Hapalosoma pellucidum, from the side. Obj. II. Oc. I. 



26. - tridentate - xAstkenosoma gracilei> (Chall. St. 184). Obj. II. Oc. I. 



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



