Mastonia crassula (Martens, 1880)

Classification

Mollusca [phylum]
Gastropoda [classis]
Caenogastropoda [subclassis]
[unassigned] Caenogastropoda [ordo]
Triphoroidea [superfamilia]
Triphoridae [familia]
Mastonia [genus]
Mastonia crassula [species]