Anguilla has two lizards that are confined to two tiny offshore islands: the Little Scrub Ground Lizard (or Anguilla Black Ameiva) Ameiva corax (Caribherp) from Little Scrub Island and the Sombrero Ground Lizard Ameiva corvina (ResearchGate) from Sombrero Island. An undescribed dwarf gecko of the genus Sphaerodactylus (p. 19 of ARC Trust pdf file) also appears to be unique to Sombrero.
A snake eel Mixomyrophis pusillipinna (BHL) was described in 1985 from a specimen collected off Anguilla.
A sweat bee Lasioglossum sombrerense (ZooKeys) and a solifugid Antillotrecha iviei (SEA pdf file) have been described from Sombrero Island. A comb-clawed beetle Hymenorus anguillae (p. 9 of Univ. Nebraska pdf file) is known solely from Anguilla.
A single flowering plant species, the Anguilla Bush Rondeletia anguillensis (ARKive) in the Rubiaceae, is unique to Anguilla.
Anguilla is a British overseas territory (see United Kingdom) and is included in the Caribbean Islands biodiversity hotspot (CEPF). An overview of the natural history of Anguilla and a description of some of its endemic species can be found at (JNCC pdf file).