Bolyeriidae

The Bolyeriidae are a family^[2] of snakes native to Mauritius and a few islands around it, especially Round Island. They also used to be found on the island of Mauritius, but were extirpated there due to human influence and foraging pigs in particular.^[3] 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).^[2] Bolyeriidae appear to be most closely related to the Asian genus Xenophidion.^[4]

Bolyeriidae
Round Island ground boa, Casarea dussumieri
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	Squamata
Suborder:	Serpentes
Superfamily:	Bolyerioidea
Family:	Bolyeriidae Hoffstetter, 1946
Synonyms
Bolyerinae Hoffstetter, 1946 Bolyeriinae C.J. Goin & O.B. Goin, 1962 Bolyeroidae McDowell, 1987 Bolyeriidae McDowell, 1987[1]

Common names: Mauritius snakes,^[2] Round Island boas, splitjaw snakes.

Geographic range

Found in Mauritius and its surrounding islets such as Serpent island, Round island, Flat island etc.^[1]

Genera

Genus[2]	Taxon author[2]	Species[2]	Common name	Geographic range[1]
BolyeriaT	Gray, 1842	1	Round Island burrowing boa[5]	Mauritius.
Casarea	Gray, 1842	1	Round Island ground boa[6]	Mauritius.

^T) Type genus.^[1]

Both of these monotypic genera once inhabited Mauritius and/or a number of islands around it. However, Bolyeria hasn't been reported since 1975 and is believed to be extinct, while Casarea is known to survive only on Round Island.^[1]