There are nine species in this family of small to medium-sized bats. They are found in from the southern United States south to South America.
They have no nose leaves but large lip leaves. They have tails and bristly hair on their muzzles. They range in color and can be brown, orange-brown, black, reddish-brown, or yellowish-brown. They eat flying insects and live in colonies in caves.
Species in this order include: the ghost-faced bat, Antillean ghost-faced bat, Parnell's mustached bat, big naked-backed bat, Davy's naked-backed bat, and the sooty mustached bat.