PLATE Xa. 
Fig. 1. Extremity of a dorsal bristle of Polynoe iphionoides, . . x 90. 
Fig. 2. One of the upper or longer ventral bristles of the same, . . x 90 
Fig. 3. Dorsal bristle of Allmaniella setuhalensis, . . . . x 350. 
Fig. 4. One of the ventral bristles of the same, from the middle of the group, x 350. 
Fig. 5. Tip of moderately elongated dorsal bristle of Polynoe magnipalpa, x 350. 
Fiff. 6. Ventral bristle of the same, . . . . . x 350. 
Fig. 7. Tip of dorsal bristle of Lagisca {Agnodice) moseleyi, . . x 350. 
Fig. 8. Tip of ventral bristle of the same, . . . . . x 350. 
Fig. 9. Tip of long and boldly curved dorsal bristle of Harmothoe hen- 
thaliana, . . . . . . . x 350. 
Fig. 10. Tip of one of the intermediate (or average) ventral jDristles of 
the same, ....... x 350. 
Fig. 11. Tip of a dorsal bristle of Eunoa yedoensis, . . . x 350. 
Fig. 12. Extremity of a ventral bristle of the same, . . . x 350. 
Fig. 13. Dorsal bristle of Scalisetosus ceramensis, . . . . x 350. 
Fig. 14. One of the inferior ventral bristles of the same, . . . x 350. ' 
Fig. 15. Dorsal bristle of Lepidonotus ivahlhergi, . . . . x 126. 
Fig. 16. Ventral bristle of the same, . . . . . x 126. 
