Coelotrochus

Coelotrochus is a genus of small sea snails, marine gastropod mollusks in the family Trochidae, the top snails.^[1]

Coelotrochus
Shell of Coelotrochus tiaratus (lectotype at MNHN, Paris)
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Vetigastropoda
Order:	Trochida
Superfamily:	Trochoidea
Family:	Trochidae
Genus:	Coelotrochus Fischer, 1880
Type species
Coelotrochus tiaratus Quoy, H.E.T. & J.P. Gaimard, 1834
Synonyms[1]
Anthora Gray, 1857 Chlorostoma (Neozelandia) Cossmann, 1918 Thorista Iredale, 1915 Thoristella Iredale, 1915 Trochus (Anthora) Gray, 1857 Trochus (Coelotrochus) P. Fischer, 1879 Trochus (Thorista) Iredale, 1915

Description

The false umbilicus is very deep and narrow, penetrating deeper than the columella, which is inserted upon its edge, not in the centre of the axis.^[2]

Distribution

This marine genus is endemic to New Zealand.

Species

Species within the genus Coelotrochus include:

• † Coelotrochus avarus (Suter, 1917)
• † Coelotrochus bibaphus (Bartrum & Powell, 1928)
• † Coelotrochus browni (C. A. Fleming, 1943)
• Coelotrochus carinatus (B. A. Marshall, 1998)
• Coelotrochus carmesinus (Webster, 1908)
• Coelotrochus chathamensis (Hutton, 1873)
• Coelotrochus davegibbsi (B. A. Marshall, 1998)
• † Coelotrochus fossilis (Finlay, 1926)
• † Coelotrochus gracilis (Laws, 1936)
• Coelotrochus oppressus (B. A. Marshall, 1998)
• Coelotrochus polychromus (B. A. Marshall, 1998)
• Coelotrochus rex (B. A. Marshall, 1998)
• Coelotrochus tiaratus (Quoy & Gaimard, 1834)
• Coelotrochus viridis (Gmelin, 1791)