PLATE XXa. 
Fig. 1. Dorsal bristle, from the anterior region of Eunice kobiensis, . x 350. 
Fig. 2. Compound bristle, from the fortieth foot of the same, mounted in 
calcium chloride, . . . . . . . x 350. 
Fig. 3. Posterior hook of the foregoing, . . . . . x 350. 
Fig. 4. Dorsal bristle, from the tenth foot of Eunice edivardsi. Viewed 
nearly but not quite laterally, . . . . x 350. 
Fig. 5. Brush-shaped bristle, from the same foot, . . . , . x 350. 
Fig. 6. Compound bristle of the same species, from the middle of the body, x 350. 
Fig. 7. Inferior hook of the foregoing, . . . . . x 350. 
Fig. 8. Compound bristle, from the middle region of Eunice aphroditois, . x 210. 
Fig. 9. Posterior hook, from the same form, . . . ' . x 210. 
Fig. 10. Compound bristle, from the anterior third of Eunice aphroditois 
from Samboangan, . . . ... . x 126. 
Fig. 11. Tip of a compound bristle, from the twentieth foot of Eunice 
torquata, ....... x 350. 
Fig. 12. Fully developed and somewhat worn hook, from the posterior 
region of the same, ...... x 210. 
Fig. 13. Developing hook of the foregoing not yet projecting beyond the 
foot. The wing is imperfectly seen from the opacity of the 
surrounding tissue, . . . . . . x 210. 
Fig. 14. Compound bristle, from one of the smaller examples of e/seyf, x 350. 
Fig. 15. Similar bristle, from a large example of the foregoing species, . x ,350. 
Fig. 16. Posterior hook from the latter specimen. The wing or guard, 
which is seldom complete, has been restored after an examina- 
tion of several, . . . . . . x 210. 
Fig. 17. Compound bristle, from the twentieth foot of Nicidon balfouriana, x 350. 
Fig. 18. Posterior hook, from the foregoing, . . . . x 350. 
Fig. 19. Compound bristle, from the twentieth foot of Eunice murrayi, . x 350. 
Fig. 20. Eecently developed hook, from the posterior region of the same, . x 350. 
Fig. 21. Compound bristle (in water), from the twentieth foot of Eunice 
mindanavensis, . . . . . . x 350. 
Fig. 22. Inferior hook of the same, . . . . . . x 210. 
Fig. 23. Compound bristle, the shaft being slightly turned round, from the 
twentieth foot of Eunice equihranchiata, . . . x 350. 
Fig. 24. Inferior hook of the same, . . . . . . x 210. 
Fig. 25. Bifid hook of Macduffia honhardi, . ... x 350. 
Fig. 26. Compound bristle of the foregoing, . . . . x 350. 
