246 REFERENCE TO PLATES. 



PLATE 33. 



FIGURE. PAGE. 



20-22. Tethys leporina Linne. After Rang, 72 



2*3. Tethys leporina Linne, radula. After Mazzarelli, . ... 72 



24. Tethys leporina Linne, opaline glaud. After Blochmann, 72 



25. Tethys depilans L., opaline gland. After Blochmann, . . 69 

 26-29. Tethys marmorata Blainv. After Rang, 74 



PLATE 34. 



1-5. Dolabrifera fusca Pse. Amer. Journ. Conch., .... 122 

 6-8. Dolabrifera tahitensis Pse. Amer. Journ. Conch , . . .121 



9, 10. Dolabrifera so werbyi Guild. C. Icon , 126 



11-16. Dolabrifera dolabrifera Cuv. After Rang, 118 



17. Dolabrifera ascifera Rang. C. Icon., 124 



18. Dolabrifera pacifica Pse. C. Icon , 122 



19. 20. Dolabrifera ascifera Rang. After Rang, 124 



21, 22. Dolabrifera marmorea Pse. C. Icon., 123 



23, 24. Dolabrifera vitrsea Sowb. C. Icon., 121 



25. Dolabrifera olivacea Pse. C.Icon., 123 



26, 27. Dolabrifera maillardi Dh. Moll. Reunion, 119 



28. Dolabrifera cuvieri Ads. Gen. Rec. Moll., 118 



29. Dolabrifera ascifera Rang. After Rang, 124 



PLATE 35. 



30. 31, 32. Tethys willcoxi Heilprin. Pilsbry, del., 80 



33, 35. Tethys sequorea Heilprin. Pilsbry, del., 77 



34. Tethys sequorea Heilprin. After Heilprin, .77 



36. Tethys guadaloupensis Sowb. C. Icon., 79 



PLATE 36. 



1, 2. Phyllaplysia lafonti Fisch. Journ. de Conch., . . . .133 



3. Petalifera ornata Desh. Tr. Elem. Conch., 130 



4-7. Petalifera punctulata T. C. Voy. Magenta, 131 



9, 10. Petalifera webbii (=virescens Risso). Mag. Zool., . 129 

 11, 12. Petalifera brugnatellii B. & R. Mag. Zool., .... 130 

 13, 14. Phyllaplysia depressa Cantr. Mai. Medit, 134 



PLATE 37. 



15-19. Tethys floridensis Pils. Pilsbry, del., 82 



20-22. Tethys protea Rang. After Rang, 78 



23-25. Tethys parvula (Guild) Morch. Pilsbry, del., ... 83 



PLATE 38. 



1,2. Tethys melanopus Crouch. P. Z. S., 75 



3-5. Tethys braziliana Rang. After Rang, 82 



