| Semicassis undulata | |
|---|---|
 | |
| Two live individuals in Archi, Reggio Calabria, Italy | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Family: | Cassidae |
| Genus: | Semicassis |
| Species: | S. undulata |
| Binomial name | |
| Semicassis undulata (Gmelin, 1791) | |
| Synonyms [1] | |
| |
Semicassis undulata is a Mediterranean species of medium-sized sea snail, a marine gastropod mollusc in the subfamily Cassinae, the helmet snails and bonnet snails.
This taxon was previously sometimes referred to at subspecies level as Semicassis granulata undulata, but in 2019, the World Register of Marine Species lists this Mediterranean taxon as a separate species from Semicassis granulata , which is a Western Atlantic taxon. [1]
This species occurs in the Mediterranean Sea and in the Atlantic Ocean off Northwest Africa and the Macaronesian Islands.
The Scotch bonnet is a medium-sized to large species of sea snail, a marine gastropod mollusk in the subfamily Cassinae, the helmet shells and bonnet shells. The common name "Scotch bonnet" alludes to the general outline and color pattern of the shell, which vaguely resemble a tam o' shanter, a traditional Scottish bonnet or cap. The shell is egg-shaped and fairly large, 2 to 4 inches in maximum dimension, with a regular pattern of yellow, orange or brown squarish spots. The surface sculpture of the shell is highly variable: the surface can be smooth and polished, have grooves, be granulated, or even be nodulose on the shoulder of the whorls.
The Cassidae are a taxonomic family of medium-sized, large, and sometimes very large sea snails commonly called helmet snails or bonnet snails. These are marine gastropod mollusks in the superfamily Tonnoidea and the clade Littorinimorpha.
Semicassis labiata is a species of large predatory sea snail, a marine gastropod mollusc. This species is in the subfamily Cassinae, the "helmet shells" and "bonnet shells", which feed on sea urchins.
The green ormer is a northeast Atlantic and Mediterranean species of sea snail, a coastal marine gastropod mollusc in the family Haliotidae, the abalones or ormer snails.
Scaphella is a genus of large sea snails, marine gastropod mollusks in the family Volutidae, the volutes.
Semicassis is a genus of medium-sized predatory sea snails, marine gastropod molluscs in the subfamily Cassinae within the family Cassidae, the helmet snails and bonnet snails.
Mitromorpha granulata is a species of sea snail, a marine gastropod mollusk in the family Mitromorphidae.
Haedropleura forbesi is a species of sea snail, a marine gastropod mollusk in the family Horaiclavidae.
Lunella is a genus of sea snails, marine gastropod mollusks in the family Turbinidae, the turban snails.
Skeneoides jeffreysii is a species of minute sea snail, a marine gastropod mollusk in the family Skeneidae.
Calliostoma granulatum, common name the European granular top shell, is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.
Babelomurex benoiti is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.
Amoria undulata, common name wavy volute, is a species of sea snail, a marine gastropod mollusk in the family Volutidae, the volutes.
Semicassis bisulcata, common name: the Japanese bonnet, is a species of large sea snail, a marine gastropod mollusk in the family Cassidae, the helmet snails and bonnet snails.
Semicassis inornata is a species of large sea snail, a marine gastropod mollusk in the family Cassidae, the helmet snails and bonnet snails.
Semicassis thachi is a species of large sea snail, a marine gastropod mollusk in the family Cassidae, the helmet snails and bonnet snails.
Phalium, common name the bonnet shells, is a genus of large sea snails, marine gastropod molluscs in the family Cassidae, the helmet shells, bonnet shells and their allies.
Cheilea is a genus of small limpet-like sea snails, marine gastropod mollusks in the family Hipponicidae, the hoof snails.
Cinysca granulata is a species of sea snail, a marine gastropod mollusk in the family Areneidae.
Semicassis saburon is a species of large sea snail, a marine gastropod mollusk in the family Cassidae, the helmet snails and bonnet snails.
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