TAB. VII. 



Fis 



9. 

 10. 

 11. 



12. 



Pleurotoma porrecta, page 55. 

 a. front view. 

 h. back view. 



Clavatula linearis, />. 56. 



a. magnified portion of ditto. 



Clavatula castanea, jfj. 57. 



a. magnified portion of ditto. 



Clavatula perpulchra, p. 58. 

 a. magnified portion of ditto. 



Clavatula Pbilberti, 7;. 57. 



a. magnified portion of ditto. ' 



Clavatula costata (:),y>'. 58. 



a. fi'ont view of var. a. 



b. front view of var. /3. 



Clavatula raitrula, /;. 59. 

 7 a. var. /3. 

 7 h. magnified portion of ditto. 



Clavatula brach)'stoma, p. 60. 

 a. magnified portion of ditto. 



Clavatula cancellata, /. 61. 



Clavatula nebula, p. 60. 



Clavatula concinnata,/'. 61. 

 a. front view of var. «. 

 h. back view of var. /3. 



Clavatula laevigata ^■i), ji. 62. 

 a. magnified portion of ditto. 



Fig. 



13. Clavatula turricula,/. 62. 



a. front view of var. a. 

 h. front view of var. /3. 



14. Clavatula Trevellyana, 7;. 63. 



a. front view. 



h. front view of another specimen. 



15. Clavatula plicifera,//. 64. 



16. Clavatula Boothii,/*. 63. 



17. Trichotropis borealis, /J. 67. 



a. front view. 

 h. back \'iew. 



18. Cancellaria coronata,^;. 64. 



a. back view. 



b. front view. 



19. Cancellaria mitrseformis (?), /*. 65. 



a. front view. 



b. back view. 



20. Cancellaria subangidosa,7;. 66. 



a. front view of var. o. 



h. back view. 



a a. front view of var. /3. 



b h. magnified portion of ditto. 



21. Cancellaria costellifera, /J. 66. 



22. Nassa labiosa, jo. 28. 



The lines indicate the size of the specimens. 



