PLATE XIIIa. 
Fig. 1, Ventral bristle (of the anterior third of the body) in Leanira 
areolata, . . . . . . . x 250- 
Fig. 2. Lateral view of a bristle with attenuate spear-tip, from the upper 
part of the foot of the same, about the anterior third, . x 104. 
Fig. 3. One of the smaller (inferior) bristles of the stout vertical row, 
showing a minute filiform process at the tip, . . . x 80. 
Fig. 4. A stout bristle with smooth tip (probably from wear) from the same 
row, . . . . . . . . X 80. 
Fig. 5. One of the larger inferior bristles of the same, in profile, . . x 80. 
Fig. 6. Characteristic portion of an average example of the inferior bristles 
of the foregoing species, . . . . . x 210. 
Fig. 7. Dorsal bristle, from the anterior third of Thalenessa digitata, . x 210. 
Fig. 8. Portion of the thickest region of one of the same, . . . x 350. 
Fig. 9. One of the central series of stoutish bristles in the first foot of the 
foregoing, ....... x 210. 
Fig. 10. One of the stout ventral bristles in the fully formed foot, showing 
only a single terminal piece, . . . . . x 210. 
Fig. 11. Portion of the thickest region of one of the larger dorsal bristles 
in the fully formed foot of Thalenessa oculata, . . x 350. 
Fig. 12. One of the central ventral bristles (in the fully formed foot) of the 
same, ....... x 250. 
Fig. 13. Central ventral bristle in the anterior third of Thalenessa 
Jimbriata, ....... x 400. 
Fig. 14. Central or average form of the ventral bristle, from the anterior third 
of Psammolyce occidentalis, . . . . . x 250. 
Fig. 15. Tip of one of the more elongated forms, . . . . x 250. 
Fig. 16. Dorsal bristle of Eupholoe philippensis, . . . . x 400. 
Fig. 17. One of the central ventral bristles of the same, . . . x 250. 
Fig. 18. An average bristle of the ventral divisions of Psammolyce 
Jijiensis, ....... x 250. 
Fig. 19. One of the superior ventral bristles of Leanira magellanica, . x 250. 
Fig. 20. One of the stouter (median) bristles of the same division of the 
foot, ........ X 250. 
