Plate I. 



Fig. I. Isosoanthus arborcscctis ^/j (from Mortsund). 



— 2. — — '/i (from Tranodybet). 



— 3, 4. — danictis ^/i on oyster shells. In fig. 3 also on the riglit side an Ascidian. 



— 5. — hUbosus 2/1 (Romer & Schaiidinn). 



— 6. — — 7i (from Ingolf Exp. St. 104). 



— 7. — magninsulosus '/i (from Ingolf ExiJ. St. 10). 



— 8. Epizoanthus paguriphihis '/i (from Michael Sars Exp. 1900). 



— 9. Parazoanthus haddoni o\\ .sponges 7i (from N. N. W. of Bergen. Uddstrom R. M. No. 270). 



— 10. — — 7i (from N. W. of Bergen. Mattsson 1880 R. M. No. 740). 



— II. — — on .sponges '/i (from N. N. W. of Bergen. Uddstrom R. M. No. 270). 



— 12. Epizoanthus norvegicus (from Trondhjem Fjord). 



— 13. — danielsseni ^/j (from Sophia Exp.). 



— 14. — erdmamii Vj (from Spitzbergen Exj). St. 42). 



— 15. — danielsseni a little magnified (from Spitzb. Exp. vSt. 42). 



— 16. — crdmanni 4/j capitulum from the oral side. 



— 17. — crdmanni '/i (from Greenland Exp. 1899). 



— 18. Isozoanthiis fiiultinstilosics -/, (from Ingolf Exp. St. 51). 



— 19. Parazoanthus anguiconms ^/i (= E. americanus var. Verrill U. S. F. C. vSt. 2245). 



