Tetracheilostoma
Tetracheilostoma is a genus of snakes in the family Leptotyphlopidae. All of the species were previously placed in the genus Leptotyphlops.
The genus contains the following species:Tetracheilostoma bilineatum, two-lined blind snakeTetracheilostoma breuili, St. Lucia threadsnakeTetracheilostoma carlae, Barbados threadsnake