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SIR CHARLES ELIOT. 



DESCRIPTION OF PLATES. 



Fig. A. — Triton iella belli — A preserved specimen from above 



„ B.— „ „ „ „ from below 



„ C. — Trifoii iella siiiuata — Dorsal surface 



„ D. — Bathydoris inflata — Seen from below ... 



„ E. — Bathijdoris hodgsoni — Ventral view 



„ r.— „ „ Side view 



„ G. — „ „ Dorsal view 



„ H. — Notaeolidia depressa — Seen from above 



„ I. — ,, „ Seen from below 



„ J. — Galvinella antarctica — From above 



,, K. — ,, „ From below 



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DESCRIPTION OF FIGURES. 



Fig. 



-Tritoniella belli — Specimen A from above 



1. 



2, 3, i. — „ Anterior part of back in three specimens showing the varying arrangement 



of tubercles 



5. — „ „ Jaws 



6. — „ „ Rhachidian tooth 



7. — „ „ First lateral tooth ... 



8. — „ „ Three laterals from the middle of the half row 



9. — Tritoniella sinuata — Rhachidian tooth ... 

 10. — „ „ Three lateral teeth 



11.— „ „ Verge 



12. — Bathydoris hodysoni — Central nervous system : a cerebral ganglia ; b pleural ganglia 



c pedal ganglia ; d commissure ; e buccal ganglia ... 

 13. — „ „ Three rhachidian teeth, a, b, c 



14. — „ „ . First lateral tooth, d ... 



15. — „ „ Second (f), and third (/) laterals 



16. — „ „ Laterals from the middle of the half row seen from the side ; the 



other teeth are seen from above 

 17. — Bathydoris inflata — Rhachidian teeth ... 

 18. — ,, ,, Two first laterals ... 



19. — „ ,, Second lateral 



20.— „ „ Third lateral 



21. — ,, ,, Lateral from the middle of half row 



22. — Notaeolidia dejjressa — Rhachidian tooth from above ... 



23. — „ „ „ „ from the side 



24. — „ „ a first lateral tooth ; b second ; c third ; d fourth 



25. — Cuthonella antarctica — A tooth from above 



26. — ,, ,, „ from the side ... 



27. — Cuthonella paradoxa — A tooth ; a from above ; b from below 



28. — Galvinella antarctica — Cerata ... 



29. — „ „ Central tooth ; a from below ; b from above... 



30. — „ „ Lateral teeth 



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