Herpetopoma scabriusculum

Rough top shell
Drawing with an apertural view of a shell of Herpetopoma scabriusculum
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Clade: Vetigastropoda
Superfamily: Seguenzioidea
Family: Chilodontidae
Genus: Herpetopoma
Species: H. scabriusculum
Binomial name
Herpetopoma scabriusculum
(A. Adams & Angas, 1867) [1]
Synonyms[2]
  • Euchelus scabriusculus A. Adams & Angas, 1867 (original combination)
  • Euchelus tasmanicus Tenison-Woods, J.E., 1876
  • Trochus scabriusculus Adams

Herpetopoma scabriusculum, common name the rough top shell, is a species of sea snail, a marine gastropod mollusk in the family Chilodontidae.[2][3]

Description

The height of the shell attains 5.5 mm. The small, very minutely perforate, thick shell has a conoidal shape. It is, ashen reddish. The five whorls are separated by canaliculate sutures, convex, the embryonic ones smooth, the rest roughened. The whorls are spirally cingulate, with four unequal cinguli on the penultimate whorl, the upper two smaller, the third forming a carina. There is sometimes a delicate riblet between the 3d and 4th lirae. The body whorl is subrotund, with unequal, alternating cinguli. The base of the shell is convex, with 5-6 concentric beaded cinguli. The interstices are clathrate. The aperture is subovate, sulcate inside. The thick outer lip is duplicate. The basal margin is plicate-dentate, and deeply notched. The columellar callous is a little reflexed above, passing into the right margin. The operculum is multispiral.[4]

Distribution

This marine species occurs off New South Wales and South Australia.

References

  1. ↑ A. Ad. and Ang., (MS. in Coll. Cum.) P. Z. S. 1867, p. 215
  2. 1 2 Bouchet, P. (2012). Herpetopoma scabriusculum (A. Adams & Angas, 1867). Retrieved through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=547214 on 2013-04-14
  3. ↑ 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.
  4. ↑ Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia (described as Euchelus scabriusculus)
External identifiers for Herpetopoma scabriusculum
Encyclopedia of Life 18652618
WoRMS 547214
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