Stomatella planulata

Stomatella planulata
Apical view of a shell of Stomatella planulata
Scientific classification
Kingdom:Animalia
Phylum:Mollusca
Class:Gastropoda
Clade:Vetigastropoda
Superfamily:Trochoidea
Family:Trochidae
Genus:Stomatella
Species: S. planulata
Binomial name
Stomatella planulata
(Lamarck, 1816)
Synonyms[1]

Gena planulata Lamarck, 1816

Stomatella planulata, common name the flattened stomatella, is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.[1]

Description

The length of the shell varies between 15 mm and 30 mm. The oval shell is much flattened. The spire is very minute, and very near the end. The aperture is almost as long as shell, its margins level and it is not arched.

Oval-oblong in contour, the two sides are about equally curved. The surface is shining, very densely and minutely striate in the direction of the whorls. The color is very deep blackish-olive with white dots, or finely variegated and marbled all over with gray and olive-brown. Under a lens it is finely articulated on the striae. The shell contains three whorls and a minute spire not projecting beyond the general outline of the shell. The oval aperture is very large. The columellar and lip margins are equally curved. The upper end is rounded with a pearly callus filling the angle. The interior is nacreous, with blue-green and fiery-red reflections

Distribution

This species occurs in the Indian Ocean off Tanzania; in the Pacific Ocean off Japan and the Philippines and in the Southwest Pacific.

References

  1. 1 2 Stomatella planulata (Lamarck, 1816).  Retrieved through: World Register of Marine Species on 3 December 2012.
  • Vaught, K.C. (1989). A classification of the living Mollusca. American Malacologists: Melbourne, FL (USA). ISBN 0-915826-22-4. XII, 195 pp.
  • Poppe G.T., Tagaro S.P. & Dekker H. (2006) The Seguenziidae, Chilodontidae, Trochidae, Calliostomatidae and Solariellidae of the Philippine Islands. Visaya Supplement 2: 1-228.

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