Features similar to P. ulyssiponensis
1: orange foot (but this darker orange than usual on P. ulyssiponensis).
2: amphora-shaped area white with no grey vertex patch.
3: mantle-skirt area white (but only on one side).
Features typical of P. vulgata
4: pallial tentacles pigment-less, colourless, translucent against black background. (Diagnostic of P. vulgata.)
5: pigment-less, colourless, translucent pallial tentacles and mantle edge appear yellow against yellow shell. (Zoom to see – almost invisible.)
6: high shell profile; H/L 52% .

OTHER SPECIES ALBUMS
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