The whole area (There is no place designation.).

  Noumea cf. simplex

It has both possibility of 'N. decussata' and 'N. simplex' by the advice of Mr. Scott Johnson.
A gill is similar to 'N. simplex' though a mantle is similar to 'N. decussata'.

Special Thanks, Mr. Scott Johnson.
Noumea cf. simplex Noumea cf. simplex Noumea cf. simplex

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