Pusia cubana is a species of sea snail, a marine gastropod mollusk, in the family Costellariidae, the ribbed miters.
The length of the shell attains 10 mm.Due to being from family of costellariidae it shares similarities to other members of the family such as a high spire,narrow aperture and a well developed siphonal canal.
These are non broadcast spawning and are not found in trochophore phase(an early larval type state).
This marine species occurs off Cuba in near Western atlantic and in the Caribbean Sea.This region is mainly known for its seamounts and knolls.