Thelyssina Explained

Thelyssina is a genus of sea snails, marine gastropod mollusks in the family Seguenziidae.

Description

The conical shell contains a peripheral carina but no axial riblets, spiral lirae or microsculpture. The U-shaped posterior sinus is shallow. The anterolateral sinus is a channel. The basal sinus is present. The columella has no sinus or tooth. The aperture has a rhomboidal shape. There are no data about the radula.^[1]

Species

Species within the genus Thelyssina include:

• Thelyssina sterrha Marshall, 1983

Notes and References

1. http://docserver.ingentaconnect.com/deliver/connect/umrsmas/00074977/v49n1/s49.pdf?expires=1369928888&id=74401970&titleid=10983&accname=Guest+User&checksum=8A1DBAA5A294BA597FCC6300E3EDAA2A 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)