PLATE CXXVI. 



Fig. 



1. Winged bristle of Loimia Montagid, Mel. X oc. 4, obj. A, with draw-tube. 

 1 a. Hook, x oc. 4, obj. D. 



1 6. Hook of Loimia medusa, Sav., from the Mediterranean, x oc. 4, obj. D. 



2. Middle hook of Thelepus setosus, De Quatrefages. X oc. 4, obj. D, with draw-tube. 

 2, 2 a and 2 a'. Bristles of Nicolea venustida, Montagu. X oc. 2, obj. D. 



2 6 and 2 6'. Hooks, x 700. 



2 6 . Hook (female — arctica). X oc. 4, obj. D, with draw-tube. 



2 6"'. Hook of a larger type, x oc. 4, obj. D. 



2 c. Anterior hook from " Porcupine." X oc. 4, obj. D. 



2 c'. Posterior hook from same example, x oc. 4, obj. D. 



2d. Anterior hook from another small example. X oc. 4, obj. D, with 2-in. draw-tube. 



4. Broadly winged bristle of Laphania Boeclci, Malmgren. x oc. 4, obj. P. 

 4 a. Anterior hook. x oc. 4, obj. F, with draw-tube. 



4 6. Posterior hook. X oc. 4, obj. F, with draw-tube. 



5. Winged bristle of Laphania, variety A. X oc. 4, obj. D. 



6. Winged bristle of Thelepus cinclnnatus var. Andreanse, Mel. 

 6 a. Hook from Berwick Bay. x oc. 2, obj. D. 



6 6. Hook from Canada, x oc. 2, obj. D, with 2-in. draw-tube. 



6 c. Anterior hook of Thelepus, from Greenland. X oc. 2, obj. D, with 2-in. draw-tube. 



6 d. Posterior hook of Thelepus from Greenland. X oc. 2, obj. D, with 2-in. draw-tube. 



7. Winged bristle of Streblosoma Bairdi, Malmgren. x oc. 2, obj. D. 



7 a. Hook. X oc. 4, obj. F. 



8. 8' and 8". Broadly winged almost flag-like posterior bristles of Leprsea lapidaria, L. 



X oc. 4, obj. D. 



8 a. Anterior winged bristle with double enlargement, x oc. 4, obj. D. 



8 b. Hook. X oc. 4, obj. D, with draw-tube. 



9. Bristle, with very narrow wings, of Polycirrus medusa, Grube. x oc. 2, obj. D. 



9 a. Simple bristle, Bressay Sound. X oc. 4, obj. F, with draw-tube. 

 9 b. Hook, x oc. 4, obj. F. 



10. Winged bristle of Proclea (Lesena) Graffi, Langerhans. X oc. 4, obj. D, with 2-in. 



draw-tube. 

 10 a. Winged serrated bristle. X oc. 4, obj. D, with 2-in. draw-tube. 

 10 6. Anterior hook, x oc. 4, obj. D, with 2-in. draw-tube. 

 10 c. Posterior hook. X oc. 4, obj. F. 



11. Hook of Poly dor a caeca, (Ersted. x oc. 4, obj. F. 



12. Hook of Pygospio seticomis, (Ersted. x 350. 



