:Common names: Mauritius snakes, Round Island boas, splitjaw snakes.
The Bolyeriidae are a family These snakes used to be placed in the Boidae, but are now classed as a separate family. Two monotypic genera are recognized, but only a single species is extant (not extinct).
Geographic range
Found in Mauritius and its surrounding islets such as Serpent island, Round island, Flat island etc.
|style="width:40%"|Mauritius.
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|Casarea
|Gray, 1842
|align="center"|1
|Round Island ground boa
|Mauritius.
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<span style="font-size:100%;"><sup>T</sup></span>) Type genus.