PLATE VI. 



Fig. 



1. Natica intermedia, p. 41, front view. 

 1- back view. 



2. Natica Michelini, p. 44, front view, elongated variety. 

 2- back view, elongated variety. 



another example, front view. 

 3 fl - another example, back view. 



4. Natica neritoidea, p. 43. 



5. ambigua, p. 44. 



6. Verneuili, p. 44, front view. 

 6- back view. 



young shell, front view. 

 ^ a - young shell, back view. 



8. Natica (Euspira) pyramidata, p. 46, front view. 

 8- back view. 



9. Natica (Euspira) coronata, p. 46. 



10. formosa, p. 42. 



11. Tancredi, p. 42. 



12. grandis, p. 41. 



13. Natica (Euspira) subcanaliculata, p. 47. 



14. Natica globosa, p. 43. 



