PLATE LXXX. 



Fig. 



1. Bristle of JEusyllis tubifex, Gosse. X Zeiss oc. 2, obj. D. 



2. Bristle of Eusyllis Blomstrandi, Mgrn. X Zeiss oc. 2, obj. D. 



3. Bristle of Autolytus A (referred to on p. 222 of vol. ii, Part I), x Zeiss oc. 2, obj. D. 



4. Bristle of Odontosyllis fulgurans, Clap, x Zeiss oc. 2, obj. D. 



5. Peculiar tip of spine from the posterior segments of Odontosyllis ctenostoma, Clap., 



from Plymouth. X Zeiss oc. 2, obj. D. 



6. Bristle of Odontosyllis ctenostoma. X Zeiss oc. 2, obj. F., with 3-in. draw-tube. 



7. Bristle of Odontosyllis gibba, Clap., var. Bobertiana, dredged off St. Peter Port, 



Guernsey. X Zeiss oc. 2, obj. D. 



8. Bristles of Syllis armillaris, 0. F. M. x 280. 



8 a. 1 Posterior bristle of the foregoing, x 350. 



9 and 9 a. Simple and compound bristles of Ioida macrophthalma, Johnst. X 350. 



10. Bristle of Syllis cornuta, H. Rathke, var. Colling sii, off Sark. The bifid tip is not 



very distinct in this figure. X Zeiss oc. 2, obj. D. 



11. Bristles (two) of Syllis cucullata, McL, from Luccomb Chine. X Zeiss oc. 2, obj. D. 



12. Compound bristle of Syllis Krohnii, Ehlers, from Lochmaddy. X 700. 



13. Compound bristle of Syllis macroceras, Grube, Isle of Wight, x Zeiss oc. 2, obj. D. 



13 a. The same from an example from the Gouliot Caves, Sark. X Zeiss oc. 2, obj. D. 



14. Compound bristle of Syllis brevioirrata, McL, with longer tip. x Zeiss oc. 2, obj. D. 



14 a. A form of the same with shorter tip. X Zeiss oc. 2, obj. D. 



15. Bristle (hamate) of Syllis spongicola, Grube. X Zeiss oc. 2, obj. D. 



16 and 16'. Bristles of Syllis cornuta, H. Rathke, St. Magnus Bay, Shetland, x as above. 

 16 a. Bristles of Syllis cornuta, H. Rathke, off the Hebrides. X Zeiss oc. 2, obj. D. 



16 b and 16 c. Bristles of the same procured off Donegal Bay by the 'Porcupine.' 



X Zeiss oc. 2, obj. D. 

 17. Upper anterior bristle of Syllis gracilis, Grube. X Zeiss oc. 2, obj. D. 



17 a. Lower bristle from the same region, x as above. 



17 b. Strong bristle from the posterior region of the foregoing, from Herm. X as above. 



17 c. Similar bristle from an example from St. Andrews. X as above. 



18 and 18 a. Bristles of Syllis Buskii, McL, from Guernsey, x Zeiss oc. 2, obj. D. 



19. Bristle of Syllis brevicirrata var. plana, from Herm. x Zeiss oc. 2, obj. D. 



20. Bristle of Amblyosyllis lineata, Grube. X Zeiss oc. 2, obj. D. 



21. Bristles of Autolytus pictus, Ehlers. X 700. 



22. Bristle of Autolytus aurantiacus, Clap. X about 700. 



22 a. Another example seen from the front, the terminal piece being twisted, x about 700. 



23. Compound bristle of Autolytus prolifer, O. F. M., seen obliquely. X Zeiss oc. 2, obj. D. 



23 a. Swimming bristle of a bud. x Zeiss oc. 2, obj. D. 



24. Falcate bristle of Myrianida pinnigera, Mont, x Zeiss oc. 2, obj. D. 



24 a. Swimming bristle of a bud of the foregoing, x Zeiss oc. 2, obj. D. 



25. Falcate bristles of the tenth foot of Nereis pelagica, L. x Zeiss oc. 2, obj. D. 



25 a. Dorsal bristle of the same. X Zeiss oc. 2, obj. D. 



25 b. Sabre-shaped bristle of the epitokous form, x Zeiss oc. 2, obj. D. 



26. Bristle of Sylline rubropunctata, Grube. x Zeiss oc. 2, obj. C. 



27. Bristle of Bhyllodoce Baretti, De Blv. X Zeiss oc. 2, obj. C. 



1 The small bifid bristle also accidentally labelled 8 a in the middle of this plate pertains to Syllis gracilis. 



