184 
Tafel 18, 
1. 2. Hydatina albocinota v. d. Hoev. — 3 — 5. Amplustrum aplustre L. — 6. 7. Hy- 
datina velum Gmel. — 8. 9. H. physis L. — 10. 11. Philine cingulata Sara. — 12. 13. Ph. 
¥itrea M. Sars. — 14. 15. Ph. sinuata Stimps, — 16. 17, Ph. velutinoides Sars. — 18. 19. 
Ph. truncatissiraa Sow. — 20. 21. Ph. japonica Lischke. — 22. 23. Ph. polaris Auriv. — 
24. Ph. coreanica A. Ad. 
Tafel 19. 
1. 2. Philine pruinosa Clark. — 3, 4. Ph. quadrata S. Wood. — 5.6. Ph. lima Brown. 
~ 7. 8. Ph. scabra Müll. — 9. 10, Ph, loveni Malm. — 11. 12, Ph. candeana d’Orb. — 
13, 14. Ph. finmarchica Sars. — 15. Ph. monterosatoi Jeflfr. — 16. Ph. sagra d’Orb. — 
17. 18. Ph, aperta var. — 19. 20. Ph. fragilis Sars. — 21. Ph. angasi Crosse. — 22. Ph. 
orientalis A. Ad. — 23. Ph. vaillanti Issel, — 24. 25. Ph. scalpta A. Ad. — 26. 27, Ph. 
angulata Jeflfr. — 28, Ph. punctata Clark. — 29, Ph. erythraea A. Ad. — 30. 31. Ph. 
nitida Jeflfr. 
