Thoristella

Thoristella is a genus of sea snails, marine gastropod molluscs in the family Trochidae, the top snails or top shells.

Thoristella has become a synonym of Coelotrochus P. Fischer, 1879

Distribution
This genus is endemic to New Zealand.

Species
Species within the genus Thoristella include:
 * Thoristella carinata Marshall, 1998 : synonym of Coelotrochus carinatus (B. A. Marshall, 1998)
 * Thoristella carmesina (Webster,1908) : synonym of Coelotrochus carmesina (Webster, 1908)
 * Thoristella chathamensis (Hutton, 1873) : synonym of Coelotrochus chathamensis (Hutton, 1873)
 * Thoristella chathamensis aucklandica (E.A.Smith,1902) : synonym of Coelotrochus chathamensis aucklandica (E.A. Smith, 1902)
 * Thoristella chathamensis chathamensis (Hutton,1873) : synonym of Coelotrochus chathamensis (Hutton, 1873)
 * Thoristella chathamensis cookiana Powell,1934 : synonym of Coelotrochus chathamensis (Hutton, 1873)
 * Thoristella chathamensis dunedinensis (Suter,1897) : synonym of Coelotrochus chathamensis (Hutton, 1873)
 * Thoristella chathamensis profunda Dell,1956 : synonym of Coelotrochus chathamensis profunda Dell, 1956
 * Thoristella crassicosta Powell,1937 : synonym of Acremodonta crassicosta (Powell, 1937)
 * Thoristella davegibbsi Marshall, 1998 : synonym of Coelotrochus davegibbsi (B. A. Marshall, 1998)
 * Thoristella oppressa (Hutton,1878) : synonym of Coelotrochus oppressus (B. A. Marshall, 1998)
 *  Thoristella polychroma Marshall, 1998 : synonym of Coelotrochus polychroma (B. A. Marshall, 1998)
 * Thoristella rex Marshall, 1998 : synonym of Coelotrochus rex (B. A. Marshall, 1998)