OPISTHOBRANCHIATE MOLLUSCA. 363 



Fig. 17. Phyttaplym, pellncida, n. sp., 19th to 22nd lateral teeth from radula. x 320. 



i, 18. rods from jaw plates, x 310. 



,. 19. median and 2 lateral teeth from radula. x 320. 



20. 9th to 12th lateral teeth from radula. x 320. 



21. 7 outermost teeth from radula. x 310. 



22. Aplysiella mollix, n. sp., lateral teeth from radula, 6th and 7th from margin, x 310. 



i. 23. rods from jaw plates. 



.- 24. 3rd to 5th teeth from centre of radula. x 310. 



,, 25. ,, 32nd to 35th teeth from centre to radula. x 310. 



26. ,, median and 1st lateral teeth'from radula. x 310. 



PLATE V. 



Fig. 1. Phyllaplysia pellucida, n. sp., shell, dorsal view, x 7. 



,, 2. Aplysiella mollis, n. sp., shell, ventral view. x7'5. 



3. ,, calcareous layer of shell, dorsal view. x7'5. 



4. Dolabrifera maillardi, DESK., animal, dorsal view, x 2. 



5. seen from right side, x 2. 



6. teeth from radula, middle of lateral row. x 315. 



7. lateral tooth from radula, 19th from centre, x 315. 



8. apex of shell showing spire. 



>, 9. shell, ventral view, x 15. 



10. ,, median and 1st lateral teeth from radula. x 315. 



11. Dolabrifera marginafa, n. sp., animal, dorsal view, x 2. 



,. 12. median and 1st to 3rd lateral teeth from radula. x 310. 



13. lateral tooth from radula, 3rd from margin, x 310. 



,, 14. ,, 22nd and 23rd lateral teeth from radula. x 310. 



15. shell, x 15. 



16. Dolabella scapula, MART., lateral teeth from radula. x 74. 



17. median and 1st to 3rd lateral teeth from radula. x 74. 



18. Notarckus ceylonicus, n. sp., animal, dorsal view, x 2. 



19. rods from jaw plates, x 130. 



20. 9th and 10th lateral teeth from radula. x 114. 



21. median and 1st and 2nd lateral teeth from radula. x!14. 



22. 24th and 25th lateral teeth from radula. x 114. 



t> 23. outermost 3 teeth from radula. x 310. 



24. Plewobranchcea brocki, BGH., animal, dorsal view, x 2. 



25. . ,, n from left side, x 2. 



n 26. 5 innermost teeth from radula. a = innermost, x 116 



27. rods from margin of jaw plate, x 320. 



)> 28. 12th and 13th lateral teeth from radula. x 116. 



PLATE VI. 



Fig. 1. Plmrobranchus homelli, n. sp., shell, membranous margin not shown, x 13, 



,, 2. 9 outermost teeth from radula. x 320. 



3. 7 innermost teeth from radula. x 320. 



,, 4. portion of jaw plate, x 300. 



,, 5. section of mantle. 



3 A 2 



