Tallorbis roseola

Tallorbis roseola is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.[2][3]

Tallorbis roseola
Drawing of a shell of Tallorbis roseola
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Vetigastropoda
Superfamily: Seguenzioidea
Family: Chilodontaidae
Genus: Tallorbis
Species:
T. roseola
Binomial name
Tallorbis roseola
G. Nevill & H. Nevill, 1869 [1]
Synonyms[2]
  • Euchelus (Tallorbis) roseola (G. Nevill & H. Nevill, 1869)
  • Euchelus lamberti (Souverbie in Souverbie & Montrouzier, 1875)
  • Trochus (Euchelus) lamberti Souverbie, 1875
  • Trochus (Tallorbis) roseola (G. Nevill & H. Nevill, 1869) superseded combination
  • Trochus lamberti Souverbie, 1875d
  • Trochus roseolus (G. Nevill & H. Nevill, 1869) superseded combination
  • Vaceuchelus roseolus (G. Nevill & H. Nevill, 1869)

Description

The height of the shell attains 11.5 mm, its diameter 11 mm. The shell has a depressed-conical shape. The 5 whorls are rapidly widening, and are separated by profound sutures. The whorls are spirally distantly costulate, with three costulae on the penultimate whorl, separated, elegantly ornamented with numerous rosy tubercles. The interstices are wide, divided by a central spiral thread, transversely cancellated. The convex base of the shell is similarly ornamented. The ample aperture is subrotund, pearly, smooth inside in adult specimens, in young ones sulcate. The thin lip is scarcely thickened and is crenulate at the margin. The columella is thickened anteriorly, subreflexed, with three twisted plicae.[4]

Distribution

This marine species was originally found off southern Sri Lanka and described as very rare.

References
  1. Nevill. Journ. As. Soc. Beng. 38, t. 17, f. 5
  2. WoRMS (2012). Tallorbis roseola G. Nevill & H. Nevill, 1869. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=567737 on 2012-11-23
  3. Herbert D.G. (1996) A critical review of the trochoidean types in the Muséumd'Histoire naturelle, Bordeaux (Mollusca, Gastropoda). Bulletin du Muséum national d'Histoire naturelle, Paris, ser. 4, 18 (A, 3-4): 409-445.
  4. Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia (described as Euchelus (Tallorbis) roseola)
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