PLATE XXIXa. 
Fig. 
1. 
Anterior bristle of Artacama zebuensis, .... 
X 
210. 
Fig. 
2. 
One of the shorter and broader anterior hooks of the same, 
X 
1060. 
Fig. 
3. 
Anterior hook of Terehellides stroemi, var., 
X 
470. 
Fig. 
4. 
Posterior hook of the same, ..... 
X 
1060. 
Fig. 
5. 
Anterior hook of Terehellides stroemi, from Bergen, 
X 
470. 
Fig. 
6. 
Posterior hook of the foregoing, ..... 
X 
1060. 
Fig. 
7. 
Anterior hook of Terehellides stroemi, var. (Station 149), . 
X 
550. 
Fig. 
8. 
Posterior hook of the same, ..... 
X 
1060. 
Fig. 
9. 
Anterior bristle (from the inferior series) of Terehellides ehlersi, . 
X 
138. 
Fio'. 
A. 
10. 
Anterior hook of the foregoing, ..... 
X 
470. 
Fig. 
11. 
Posterior hook, ....... 
X 
1060. 
Fio" 
12. 
Anterior hook of Terehellides sp. (Station 169), 
X 
790. 
Fig. 
13. 
Posterior hook of the same, ..... 
X 
1060. 
Fig. 
14. 
Bristle of Syllis rohertiance, ..... 
X 
400. 
Fig. 
15. 
Hook of fragmentary Praxilla (Station 76), 
X 
430. 
Fig. 
16. 
Anterior dorsal bristle of Potamilla torelli. 
X 
350. 
Fig. 
17. 
Paddle-shaped inferior bristle from the same tuft. 
X 
350. 
Fig. 
18. 
Upper bristle, from the posterior region of the body, showing the 
tip greatly elongated, ..... 
X 
350. 
Fig. 
19. 
Anterior hook of the same species, . . . 
X 
390. 
Fig. 
20. 
Anterior bristle (dorsal group) of Sahella zehuensis. 
X 
350. 
Fig. 
21. 
Inferior bristle (in profile), from the same region. 
X 
350. 
Fig. 
22. 
Anterior hook of the foregoing species, .... 
X 
390. 
Fig. 
23. 
Upper bristle, from the anterior dorsal region of Sahella 
assimilis, ....... 
X 
350. 
Fig. 
24. 
Inferior bristle, from the same foot, .... 
X 
350. 
Fig. 
25. 
Anterior hook of the foregoing, ..... 
X 
390. 
Fig. 
26. 
Tip of an anterior bristle of Hydroides midtispinosa, , . 
X 
350. 
Fig. 
27. 
Anterior hook of the same, ..... 
X 
700. 
Fig. 
28. 
Anterior hook of Serpula philippensis, .... 
X 
700. 
Fig. 
29. 
Tip of an anterior bristle of Placostegus assimilis. 
X 
350. 
Fig. 
30. 
Anterior hook of the same species, somewhat flattened, after 
mounting in Farrant’s solution, .... 
X 
700. 
Fig. 
31. 
Tip of an anterior bristle of Spirohranchus occidentalis, slightly 
curved by Farrant’s solution. 
Fig. 
32. 
Anterior hook of the foregoing, ..... 
X 
700. 
^ The engraver unfortunately has made a mess of the fine and regular lines on the right. 
