Etymology
- Scientific name
The generic name is a combination of the Latin prefix semi, meaning half, and noun cassis, meaning helmet. The specific name of this taxon, granulata, is derived from the Latin noun grana meaning grain. Here it is used in the diminutive form, meaning granulated, or covered in granules, i.e. small grains or pellets, referring to the shell sculpture.
- Common name
The shell of this species was given the common name "Scotch bonnet" because of a vague resemblance to a tam o'shanter, a traditional tartan hat that used to be commonly worn in Scotland. The shell has a pattern of square or rectangular brown or tan patches. The shell can sometimes be smooth except for growth lines, but in other individuals it can have a sculpture of incised spiral grooves and even weak axial ribs which, together with the colored patches of the shell, create an effect that is somewhat reminiscent of the patterns of a Scottish plaid.
Read more about this topic: Semicassis Granulata
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