PLATE LXX. 



Fig. 



1. Foot of Sphxrosyllis hystrix, with swimming-bristles, from sea off Co. Down (Professor 



G. Brady), x 180. 



2. Foot of Xenosyllis Kinbergi, n.s. X about 50. 



8. Foot of Microsyllis Marenzelleri, n.s., from the Sound of Harris. X 250. 



4. Foot of Pionosyllis prolifera, Krohn, from Guernsey. X about 50. 



5. Foot of female bud of the foregoing, with swimming-bristles, from Scalloway. A 



papilla appears at the tip dorsally, and thus the example differs from the type. 

 X about 50. 



6. Foot of variety (?) of the same form, from Herm. X about 50. 



7. Foot of Pionosyllis divaricata, Keferst. X about 50. 



8. Foot of Trypanosyllis zebra, Grube. X 50. 



9. Foot of Eusyllis tubifex, Gosse. X 50. 



10. Foot of bud of Autolytus prolifer, from St. Andrews. The swimming-bristles are 



developing, x 50. 



11. Foot of Odontosyllis fulgiirans, Clap. X about 50. 



12. Foot of Odontosyllis ctenostoma, Clap. X about 50. 



13. Foot of Odontosyllis gibba, var. Robertianse. X about 50. 



14. Foot of Syllis armillaris, O. F. M. X about 50. 



15. Foot of Ioida macrophthalma, Johnst., with long swimming-bristles. X about 50. 



16. Foot of Syllis comuta, var. Gollingsii, off Sark. x about 50. 



17. Foot of Syllis cucidlata, n.s. Luccomb Chine. X about 50. 



18. Foot of Syllis macroceras, Grube, from "Whitecliff Bay, Isle of Wight. X about 50. 



19. Foot of Syllis Ounninghami, n.s. X Zeiss oc. 2, obj. A, 1 in. draw-tube. 

 19a. Foot of bud of the foregoing. X about 50. 



20. Foot of Syllis brevicirrata, n.s., from Herm. X about 50. 



21. Foot of pelagic form of Syllis spongicola, Grube. X about 50. 



22. Foot of Syllis comuta, H. Rathke, from St. Magnus Bay, Shetland. X about 50. 

 22a. Foot of variety of the same form (off the Hebrides). X about 50. 



22b. Foot of another specimen from Donegal Bay. X about 50. 



23. Foot of Syllis Busldi, n.s. X about 55. 



24. Foot of Pionosyllis (Syllis) hyalina, Grube. X about 55. 



25. Anterior foot of Syllis gracilis, Grube. X about 55. 



2ba. Foot of the foregoing from the posterior part of the middle region of the body. 

 X about 55. 



26. Foot of Sylline rubropunctata, Grube. X Zeiss oc. 4, obj. A. 



