Trying to post pics again for ID help

[MarkLF]

Thanks again Paul.
Now to make sure I have the nomencleture straight its: Family; Cypraeidea, Genus; Cypraea, Subgenus; (Mauritia), and Species; maculifera. correct?
This is sometimes confussing to me, Ive seen shells for sale that look like this: for instance:

  CYPRAEIDAE                  ARABICA IMMANIS RUDIMACULOSA MAURITIA

All capital letters and no parentheses???  I know there can sometimes be subspecies also.