PLATE XXXIV. 



Fig. 



1. Proboscis of Scalisetosus pellucidus. X under a lens. 



2. Proboscis of Lagisca floccosa. X under a lens. 



3. Lateral view of the proboscis of Panthalis (Erstedi. X under a lens. 



4. Antero-posterior view of the same. X under a lens. 



5. Anterior scale of the same form (" Triton," 1882). X 24. 



6. Anterior scale of Sthenelais boa (adult). X 17. 



7. Scale of Sthenelais zetlandica. X 32. 



8. Anterior scale of Sthenelais atlantica. X 55. 



9. Scale from the anterior third of Sthenelais limicola. X 12. 



10. Posterior scale of the foregoing. x 30. 



11. Proboscis of Sthenelais limicola. X under a lens. 



12. Scale of Sthenelais, Z. X 18. 



13. Anterior scale of Sthenelais Jeffrey sii ( u Porcupine," off Ireland). X 17. 



14. Anterior scale of Sigalion Mathilda with branchial process. Enlarged. 



15. Anterior scale of Sigalion Bushii. Enlarged. 



16. Dorsal view of the anterior end of Pholoe minuta. X under a lens. 



17. Anterior scale of Pholoe minuta, var. inornata (Lochmaddy). X 90. 



18. Anterior scale of Pholoe minuta, var. (St. Lawrence, Canada). X 40. 



