EXPLANATION OF PLATES, XVII. 339" 



FIGURE PAGE 



81. D. zelandicum Sowb. From Thes. Conch., . . .70 



82. D. profundorum Smith. From Ann. Mag., . . .79 



83. D. compressum [=hungerfordi]. From P. Z. S., . . 84 



84. D. buccinulum Gld. From C. Icon., . . . .14 



85. D. intercalatum Gld. From C. Icon., . . . .23 



86. D. lessoni Dh. From Deshayes, ..... 8 

 87-89. D. plurifissuratum Sowb. From P. Mai. Soc., . . 82 

 90. D. lessoni Dh. From Cheiiu, ...... 8 



PLATE 7. 



1. D. laqueatum Verr. From Tr. Conn. Acad., . . . 10 



2. D. laqueatum Verr. From Blake Rep., . . . .10 



3. D. callithrix Dall. From Blake Rep^ .... 62 



4. D. ceratum Dall (young). From Blake Rep., . . .57 



5. D. ceratum Dall. From Blake Rep., . . . .57 



6. D. carduus Dall. From Blake Rep., . . . .30 



7. D. ensiculus Jeffr. From Blake Rep., . . . .121 



8. 9. D. ensiculus Jeffr. From P. Z. S., . . . .121 



10. D. ensiculus Jeffr. From Chall. Rep., . . . .121 



11. D. compressum Wats. (=pressum). From Chall. Rep., . 124 



12. D. sericatum Dall. From Blake Rep., . . . .86- 



13. D. ophiodon Dall. From Blake Rep., . . . .126 



14. D. gouldii var. obsoletum Dall. From Blake Rep., . 20 



15. 16. D. subterfissum Jeffr. From P. Z. S., ... 61 

 17-19. D. subterfissum Jeffr. From Chall. Rep., ... 61 



20. D. didymum Wats. From Chall. Rep., . . . . 12& 



PLATE 8. 



21. D. abyssorum Sars (A. striolata Sars). From Sars, . . 48 



22. 23. D. vulgare DaCosta. From Moll. Rouss., . . .41 



24. D. vulgare DaCosta. From Forbes & Hanley, . . 41 



25. D. entalis L. From Forbes & Hanley, .... 42 



26. D. circumcinctum Wats. From Chall. Rep., . . .88 



27. 28. D. solidum Verr. (=candidum). From Tr. Conn. 



Acad., . . 72 



29, 30. D. candidum Jeffr. From P. Z. S., . . . . 72 



31, 32. D. capillosum Jeffr. From P. Z. S., . . . . 77 



33. D. capillosum Jeffr. Specimen 77 



34, 35. D. capillosum Jeffr. From Chall. Rep., ... 77 



36. D. agile Sars. From Sars, 46 



37. D. amphialum Wats. From Chall. Rep., ... 71 



PLATE 9. 



38. D. panormum Chenu. Specimen, 54 



39. D. panormum Chenu. From Thes. Conch., . . .54 



