title: Thoristella
text: # 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)
  