PLATE XXXIII. 



Fie. 



1. Anterior scale of Evarne Hubrechti, Mel. X 20. 



2. Portion of the scale of a small example of Halosydna gelatinosa, Sars. X 210. 



3. Portion of the inner edge of the first scale of Harmothoe areolata, Gr. X 90. 



4. Anterior scale of Harmothoe spinifera, Ehlers. X 20. 



5. Anterior scale of Loenilla setosissima, Sav. X 20. 



6. Anterior scale of Scalisetosus assimilis, Mel. X 38. 



7. Anterior scale of Scalisetosus pellueidus, Ehlers. X 45. 



8. Anterior scale of Antinoe finmarchica, Mgrn. X 30. 



9. Anterior scale of Antinoe mollis, Mel. X 18. 



10. Anterior scale of Malmgrenia castanea, Mel. X 40. 



11. Anterior scale of Malmgrenia andreapolis, Mel. X 24. 



12. Scale of a small example of Halosydna gelatinosa, Sars. X 15. 



13. Scale of small example of Polynoe scolopendrina, Sav. (from Herm). x 40. 



14. Scale of the large form of Polynoe scolopendri?ia 9 Sav. (from North Uist). X 24. 



15. Scale of Acholoe astericola, D. Chiaje. X 28. 



16. Tenth scale of Sthenelais boa, Johnst., from St. Andrews. X about 30. 



17. Anterior scale of Antinoe Sarsi, Kbg. X 20. 



