PLATE XLI. 



Fig. 



1. Dorsal bristle of Halosydna gelatinosa, Sars. X 180. 



2. Superior ventral bristles, x 180. 



3. Median ventral bristle. X 180. 



4. Dorsal bristle of Polynoe scolopendrina. X 350. 



5. Large bristle above the spine of the ventral division of the foot. X 90. 



6. Bristle of the other series adjoining the spine. X 90. 



7. Tip of a dorsal bristle. X 350. 



8. Tip of one of the series represented in fig. 6. X 350. 



9. Dorsal bristle of Enipo Kinbergi. X 350. 



10. Ventral bristle with simple tip. X 350. 



11. Bifid ventral bristle, x 350. 



12. Antero-posterior view of a large ventral bristle with a simple tip. X 350. 



13. Dorsal bristle of Acholoe astericola. X 350. 



14. Ventral bristle. X 350. 



15. Brush-shaped bristle from the superior border of the foot of Panthalis (Erstedi, 



X 350. 



16. Antero-posterior view of a bristle from the upper third of the median lobe of the foot. 



X 210. 



17. Lateral view of the same bristle. X 210. 



18. Bristle from the ventral edge of the foot. X 210. 



19. Dorsal bristle of Sthenelais boa. X 90. 



20. Fragment of the former, showing spinous rows. X 350. 



21. Superior ventral bristle with simple spinous tip X 350. 



22. Stout bristle from the centre of the ventral division with a single appendage, x 350. 



23. Bristle from the inferior series. X 350. 



24. Portion of the edge of a scale of Sthenelais Zetlandica. x 350. 



25. Superior ventral bristle in calcium chloride- X 350. 



26. Inferior ventral bristle. X 350. 



27. Edge of a scale of Sthenelais atlantica. X 350. 



28. Superior ventral bristle. X 350. 



