Lanistes purpureus from Tanzania. Shell heigth: 45 mm. (picture not licenced under creative commons)

Shell: The rare Lanistes purpureus has a beautifull purple shell. As in all Lanistes species, this snail is hyperstrophic sinistral, which means the shell is sinistral, but the body of the snail is dextral.
Operculum:
Body:
Eggs:

Food:
Behaviour:
Distribution: Tanzania

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