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Tegula excavata
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Vetigastropoda
Order:	Trochida
Superfamily:	Trochoidea
Family:	Tegulidae
Genus:	Tegula
Species:	T. excavata
Binomial name
Tegula excavata (Lamarck, 1822)
Synonyms
Agathistoma excavata Lamarck, 1822 Chlorostoma excavata Lamarck, 1822 Chlorostoma excavatum Lamarck, 1822 Neomphalius excavata Lamarck, 1822 Omphalius excavata Lamarck, 1822 Trochus cinerea Costa, E.M. da, 1778 Trochus cinereus da Costa, 1778 Trochus excavatus Lamarck, 1822 (original description)

Tegula excavata, common name the green-based tegula, is a species of sea snail, a marine gastropod mollusk in the family Tegulidae.

Description

The height of the shell varies between 12 mm and 18 mm. The umbilicate shell has a conical shape. It is dull grayish, olivaceous or pinkish, longitudinally lineolate with a darker shade, frequently appearing unicolored. The spire is conic. The apex is eroded or acute. The 6 to 7 whorls are flattened, scarcely convex, very obsoletely spirally grooved. The body whorl is acutely carinated at the periphery, flat or plano-concave beneath, concentrically lirate. The large aperture is subhorizontal, iridescent within. The columella is sinuous, unidentate in the middle, green, half surrounding the umbilicus with a sickle-shaped callus. The umbilicus is funnel-shaped, green or white within, broadly expanding at its opening.

Distribution

This species occurs in the Gulf of Mexico, the Caribbean Sea and the Lesser Antilles.

References

1. Tegula excavata (Lamarck, 1822). Retrieved through: World Register of Marine Species on 20 April 2010.
2. Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia (described as Chlorostoma excavatum)

External links

• Gastropods.com: Tegula|excavata

• Tegula (gastropod)
• Gastropods described in 1822