Asthelys

Asthelys is a genus of sea snails, marine gastropod mollusks in the family Seguenziidae.[2]

Asthelys
Shell of Asthelys semiplicata
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Vetigastropoda
Family: Seguenziidae
Subfamily: Asthelysinae
Genus: Asthelys
Quinn, 1987 [1]
Type species
Basilissa munda
Watson, 1879

Description

The conical shell lacks axial riblets and a peripheral carina but has a punctate microsculpture. The midwhorl angulation is initially absent, but present on later whorls. The shell contains no spiral lirae. The U-shaped posterior sinus is shallow. The basal sinus is present, but there is no anterolateral sinus. The columella has no sinus or tooth. Tha aperture has a rhomboidal shape. There is no umbilical septum.

Radula: the rachidian tooth is broader than high and has lateral wings prominent. The lateral tooth cusp is broad. There are less than 10 marginal tooth pairs.[3]

Species

Species within the genus Asthelys include:

References
  1. Quin 1987. A revision of the Seguenziacea Verrill, 1884 (Gastropoda: Prosobranchia). II. The new genera Hadroconus, Rotellenzia, and Asthelys. Nautilus 10 I (2): 59-68
  2. Asthelys Quinn, 1987. Retrieved through: World Register of Marine Species on 18 April 2010.
  3. James F. Quinn Jr., (1991), Systematic Position of Basilissopsis and Guttula, and a Discussion of the Phylogeny of the Seguenzioidea (Gastropoda: Prosobranchia), Bulletin of Marine Science, Volume 49, Numbers 1-2, September 1991 , pp. 575-598(24)
  4. Asthelys mundus (Watson, 1879). Retrieved through: World Register of Marine Species on 18 April 2010.
  • Marshall, B. A. (1988). New Seguenziidae (Mollusca: Gastropoda) from the Tasman, South Pacific, and Southern Antilles Basins. New Zealand Journal of Zoology 15: 235-247
  • Marshall B.A. (1991). Mollusca Gastropoda : Seguenziidae from New Caledonia and the Loyalty Islands. In A. Crosnier & P. Bouchet (Eds) Résultats des campagnes Musorstom, vol. 7. Mémoires du Muséum National d'Histoire Naturelle, A, 150:41-109.
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