Lirularia yamadana

Lirularia yamadana is a species of small sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.[2]

Lirularia yamadana
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Clade: Vetigastropoda
Order: Trochida
Superfamily: Trochoidea
Family: Trochidae
Genus: Lirularia
Species:
L. yamadana
Binomial name
Lirularia yamadana
(E. A. Smith, 1875) [1]
Synonyms
  • Gibbula yamadana (E.A. Smith, 1875)
  • Trochus (Gibbula) yamadanus E. A. Smith, 1875 (original description)

Description

The height of the shell attains 6 mm, its diameter 4½ mm. The ovate-conical, slightly perforate shell is dull whitish. It is painted on the lirae with lilac-brown tessellations, somewhat formed into flammules. The five whorls are convex, and separated by profound sutures, ridged by delicate spiral lirae articulated with lilac-brown (5 to 6 on penultimate, about 20 on the body whorl). The shell shows oblique incremental lines. The pearly aperture is circular, equalling ½ the total length. The columella is a trifle thickened. The terminations of the peristome are joined by a thin callus.

The elongate brownish-lilac spots on the lirations are situated somewhat irregularly underneath each other, so as to form flammulations.[3]

Distribution

This marine species occurs off Japan.

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References
  1. E. A. Smith, Ann. Mag. N. H. 1875, xvi, p. 111.
  2. Bouchet, P. (2014). Lirularia yamadana (E. A. Smith, 1875). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=732093 on 2014-07-12
  3. H. Pilsbry (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia (described as Gibbula yamadana)
  • Higo, S., Callomon, P. & Goto, Y. (1999) Catalogue and Bibliography of the Marine Shell-Bearing Mollusca of Japan. Elle Scientific Publications, Yao, Japan, 749 pp.
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