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., . . . . 2& 



86. D. lessoni Dh. From Deshayes, 8 



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



90. D. lessoni Dh. From Cheriu, . ., . . . . & 



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., v> . - . -V. . 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., . .. . .123 



PLATE 8. 



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



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



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. Cpjin. 



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, . v . . . 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 



