PLATE XXIVa. 
Fig. 1. One of the first series of bristles in FhyllochcBtopterus claparedii, 
in profile, ....... x 350. 
Fig. 2. The same seen antero-posteriorly, . . . . . x 350. 
Fig. 3. Strong brownish spine, from the middle of the third series of 
bristles in the foregoing form, . . . . x 90. 
Fig. 4. Bristle, from the fifth series in this species, . . . x 350. 
Fig. 5. Group of bristles, from the posterior region in the same example, . x 350. 
Fig. 6. Hook, from about the fiftieth foot of Scolecolepis cirrata, var. 2, 
from Sombrero and St. Thomas, . . . . x 350. 
Fig. 7. One of the larger hooks, from the tenth foot of Prionospio capensis, 
seen partly but not quite in profile, . . . . x 350. 
Fig. 8. A smaller example from the same foot, exhibiting a full profile, . x 350. 
Fig. 9. Fragment of a dorsal bristle, from the tenth series of Cirratulus 
capensis, . . ’ . . . . . x 350. 
Fig. 10. Hook, from the posterior region of the same (in Farrant’s solution), x 55. 
Fig. 11. Hook, from the posterior part of the fragment of amWZz's, x 350. 
Fig. 12. Dorsal bristle, from the tenth foot of Chcetozone atlantica, . . x 55. 
Fig. 13. Dorsal bristle, from the tenth foot of Chcetozone henthaliana, . x 55. 
Fig. 14. Posterior ventral bristles and spines in the same form, . . x 350. 
Fig. 15. Anterior hook of Notomastus agassizii, . ... x 500. 
Fig. 16. Hook, from the second region of . . x 500. 
Fig. 17. Hook oi Dasyhranchus sp. (fragment), . . . . x 500. 
Fig. 18. Dorsal bristle, from the eighth foot of Nicomache capensis, . x 350. 
Fig. 19. Ventral hook, from the same foot of the foregoing, . . . x 350. 
Fig. 20. Hook, from the eighth bristled foot of Nicomache japonica, . x 350. 
Fig. 21. Posterior hook of Nicomache (?) henthaliana, . . . x 350. 
