Plate XIII. 



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



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



? — 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. 

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



io . — — — — — - Arceosoma Belli. Obj. o. Oc. I. The basal part was 



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



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



!2. — large — - Sperosoma Grimaldii. Obj. o. Oc. I. 



I o, — small — - Hygrosoma Petersii. Obj. II. Oc. I. 



iA — large — - — luculentum. Obj. II. Oc. I. 



jc — — — - Kamptosoma asterias (<.<Phormos.temte». ChaW. St 272). 



Obj. II. Oc. I. 



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



_ r j— 18. Valves of tridentate pedicellaria; of Calveria hystrix. Obj. II. Oc. o. 

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



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



— 21. Tridentate pedicellaria, larger form, of Kamptosoma asterias ( Phormos. tenner. 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 pellucidnm. Obj. o. Oc. o. 



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



