42 Phorcus lineatus COMPARISON Steromphala cineraria

42 Phorcus lineatus COMPARISON Steromphala cineraria

The shell of Steromphala cineraria has many narrow, grey or bluish grey bands radiating from its apex across all its whorls. Its umbilicus progressively narrows with age and may be very restricted or completely closed (1) when fully grown. It does not have a white tooth on the columellar lip.