PLATE VI. 
Natica intermedia, p. 41, front view. 
= — back view. 
Natica Michelini, p. 44, front view, elongated variety. 
— — back view, elongated variety. 
— — another example, front view. 
— — another example, back view. 
Natica neritoidea, p. 43. 
— ambigua, p. 44. 
— Verneuili, p. 44, front view. 
= a back view. 
= — young shell, front view. 
— = young shell, back view. 
Natica (Euspira) pyramidata, p. 46, front view. 
— = = back view. 
Natica (Euspira) coronata, p. 46. 
— formosa, p. 42. 
— Tancredi, p. 42. 
— grandis, p. 41. 
Natica (Euspira) subcanaliculata, p. 47. 
Natica globosa, p. 43. 
