Costellariidae sometimes called the "ribbed miters" is a taxonomic family of minute to medium-sized predatory sea snails, marine gastropod mollusks.
This family of snails is also sometimes referred to as Vexillum miters. The main family of miter shells however is Mitridae, a closely related group.
Costellariidae
Neogastropoda is an order of sea snails, both freshwater and marine gastropod molluscs.
Neogastropoda
Two neogastropods in the picture. Brunneifusus ternatanus (left) Murex trapa (right) in captivity.