Scotch Bonnet Snail

(Born, 1778)

Semicassis granulata

Class:

Order:

Family:

Gastropoda

Littorinimorpha

Cassidae

Cassidae

Shell Information

Length (mm): 25-75

Dextral

Chirality:

This shell has about 5 whorls with a relatively short spire and large body whorl. The sculpture of this shell can be highly variable from smooth to having deep spiral grooves. The aperture is elongated with folds on the inside of the outer lip. It is usually tan to white in color and sometimes has orange-brown spots or lines.

Description:

Ecological Information

Distribution:

Depth (m):

North Carolina to Uruguay

0 to 183 meters

Diet:

Carnivore

Habitat:

Marine; Soft substrates

Misc. Facts

It is the official state shell of North Carolina.

Citations

MolluscaBase eds. (2021). MolluscaBase. Semicassis granulata (Born, 1778). Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=419784 on 2021-06-23

Rosenberg, G., F. Moretzsohn, and E. F. Garc�a. 29. Gastropoda (Mollusca) of the Gulf of Mexico, Pp. 579�699 in Felder, D.L. and D.K. Camp (eds.), Gulf of Mexico�Origins, Waters, and Biota. Biodiversity. Texas A&M University Press, College Station, Texas.

Morris, P. A. (1987). A field guide to shells: Atlantic and Gulf coasts and the West Indies (3rd ed.). Houghton Mifflin.