Quadrasia Crosse, 1886 Clea is a genus of freshwater snails with opercula, aquatic gastropod mollusks in the subfamily Anentominae of the family Nassariidae, a family, almost all of the rest of which are marine.

[citation needed] This genus was originally described within the family Buccinidae.

[3] It was classified in the newly established subfamily Anentominae within Nassariidae in 2017.

They feed on different types of worms and gastropods, often eating other, larger snails after burying themselves and ambushing their prey.

[9] Some members of this genus is a part of ornamental pet trade for freshwater aquaria.