PLATE CIV. 



Fig. 



1. Ordinary bristle of Stylarioides plumosa, 0. F. Miiller. X oc. 2, obj. D. 



1 a. Bristle from a specimen dredged in the Gulf of St. Lawrence, Canada, x 350. 



1 b. Portion of a shaft of a British bristle of the same. X oc. 4, obj. D. 



1 c. Tip of a hook of the same from the Gulf of St. Lawrence. x 40. 



1 d. Hook of an example from the Gulf of St. Lawrence. x oc. 4, obj. A. 



2. Hook of Stylarioides diplochaitos, Belle Chiaje, from Naples, x oc 4, obj. A, with full 



draw-tube. 



3. Bristle of Stylarioides flab ellata, Sars, off Bergen. X 50 diam. 

 3 a. Anterior ventral bristle of the same. X 350. 



3 b and 3 c. Hooks of the foregoing. X oc. 4, obj. A. 



3 d. Peculiarly modified articulation where shaft and tip meet in the same form. x oc. 



4, obj. A. 

 3 e. Posterior hook of the foregoing. X oc. 4, obj. D. 



4. Bristle of Stylarioides hirsuta, Hansen. x oc. 2, obj. A, with draw-tube. 



5. Bristle of Stylarioides Sarsi, McL, from the ' Porcupine ' 1870, off Cape Sagres. 



X oc. 2, obj. A. 

 5 a. Basal portion of a dorsal bristle of the foregoing. X 350 diam. 

 5 b. Ventral hooks of the fourth foot of this species. Similarly magnified. 

 5 c. Tip of hook-like bristle from the postero-lateral region of the same. X oc. 2, obj. A. 

 5 d. Well-developed posterior hook of the foregoing. x oc. 2, obj. A. 



5 e. Posterior hooks of the same. X oc. 2, obj. A. 



6. Articulated bristle of Stylarioides arenosa, Webster, with curved tip. X oc. 2, obj. D. 

 6'. Straighter bristle of the same. Similarly magnified. 



6 a. Portion of a bristle of the third set with wide articulations. x oc. 2, obj. D. 



6 b and 6 V . Portions of another bristle of the third set with narrow articulations. 



6 b X oc. 2, obj. D. 6 b' more highly magnified. 

 6 c. Compound tip of a ventral bristle of the third series resembling the arrangement in 



Sigalion and Sihenelais. x oc. 2, obj. D. 



6 d. Hook of the foregoing from fortieth to fiftieth foot. X oc. 2, obj. D. 



7. Bristle of Flabelligera affinis, Sars. X oc. 4, obj. D. 



7 a. Hook of the same. X oc. 2, obj. D. 



7 b. Tip of a hook more highly magnified to show structure. 



8. Bristle of Flabelligera BusMi, Mcintosh. x 90 diam. 



8 a. Portion of a bristle of the same with wide articulations. X 350 diam. 



9. Fragment of a frontal bristle of Stylarioides glauea, Mgrn. X 350 diam. 



10. Lateral view of hook of Streblospio Shrubsoli, after Miss F. Buchanan. X 400 ? 



