Casmaria atlantica
Casmaria atlantica is a species of large sea snail, a marine gastropod mollusk in the family Cassidae, the helmet snails and bonnet snails. Description The maximum recorded shell length is 45 mm. Habitat The minimum recorded depth for this species is 7 m; the maximum recorded depth is 30 m. References Cassidae Molluscs of the Atlantic Ocean Gastropods described in 1944 Taxa named by William J. Clench