are a family of amphisbaenians
, commonly known as worm lizards
. They are found in South America, some Caribbean islands, and in sub-Saharan Africa. One primitive and somewhat aberrant genus, Blanus
, is native to Europe, and may represent a distinct family.
Members of the family are limbless, burrowing, lizard-like reptiles with a carnivorous diet. Some species have spade-like heads, while others have a narrow crest.
There are over 120 species in the family, grouped into seventeen genera.