Atlantic Deer Cowrie

This species is one of the largest cowries. It is quite similar in shape and colour to Macrocypraea cervinetta, but it is much larger. The maximum recorded shell length is 190 millimetres (7.5 in), while minimum length is about 40 millimetres (1.6 in). The shell is elongated, its basic color is light brown, with small whitish ocellated spots on the dorsum, like a young fawn (hence the Latin name cervus, meaning 'deer'). Juveniles have no spots. The dorsum also shows a few transverse clearer bands, and a longitudinal line where the two edges of the mantle meet. The apertural teeth are dark brown. The mantle of the living cowry is dark grayish and completely covered in short fringes.

This species is mainly distributed in the tropical Atlantic Ocean including the Caribbean Sea, and in the waters off South Carolina, Florida, Mexico, Brazil, Cuba and the Bermudas.