TAB. VII. 



Fig. 



1. Pleurotoma porrecta, page 55. 



a. front view. 



b. back view. 



2. Clavatula linearis, p. 56. 



a. magnified portion of ditto. 



3. Clavatula castanea, jy. 57. 



a. magnified portion of ditto. 



4. Clavatula perpulchra, p. 58. 



a. magnified portion of ditto. 



5. Clavatula Philberti, p. 57. 



a. magnified portion of ditto. 



6. Clavatula costata (?),/>. 58. 



a. front view of var. a. 



b. front view of var. j3. 



7. Clavatula mitrula, p. 59. 



7 a. var. /3. 



7 b. magnified portion of ditto. 



8. Clavatula brachystoma, p. 60. 



a. magnified portion of ditto. 



9. Clavatula cancellata, p. 61. 



10. Clavatula nebula, p. 60. 



1 1 . Clavatula concinnata, p. 6 1 . 



a. front view of var. a. 



b. back view of var. j3. 



12. Clavatula Isevigata (?), JP. 62. 



a. magnified portion of ditto. 



Fig. 



13. Clavatula turricula, p. 62. 



a. front view of var. a. 



b. front view of var. j3. 



14. Clavatula Trevellyana, p. 63. 



a. front view. 



b. front view of another specimen. 



15. Clavatula plicifera^ p. 64. 



16. Clavatula Boothii,/*. 63. 



17. Trichotropis borealis, p. 67. 



a. front view. 



b. back view. 



18. Cancellaria coronata,^. 64. 



a. back view. 



b. front view. 



19. Cancellaria mitrseformis (?), p. 65. 



a. front view. 



b. back view. 



20. Cancellaria subangulosa, p. 66. 



a. front view of var. o. 



b. back view. 



a. front view of var. j3. 



$ <5. magnified portion of ditto. 



21. Cancellaria costellifera, p. 66. 



22. Nassa labiosa,jy. 28. 



lines indicate the size of the specimens. 



