Cucullus

Cucullus may refer to:


 * a Latin word referring to a hood of a garment, as in cucullus non facit monachum (The hood does not make the monk)
 * a substructure of the valva, a structure in male insects that is used to hold the female during copulation
 * a hood over the head of Ricinulei arachnids
 * a synonym for Conus, the cone snails, a genus of predatory sea snails