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Leptothyra filifer 001.jpg
Leptothyra filifer shells
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked): clade Vetigastropoda
Superfamily: Phasianelloidea
Family: Colloniidae
Subfamily: Colloniinae
Genus: Leptothyra
sensu Pease, 1869[1]
Type species
Leptothyra costata Pease, 1869

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

This genus was previously placed in the family Turbinidae.

The name Leptothyra is generally attributed to Pease (1869), and the name "Leptothyra Pease, 1869" is usually treated as a valid name for small colloniines. Although Leptothyra is a junior objective synonym of Homalopoma, the species usually treated as valid in that genus are provisionally listed in WoRMS under "Leptothyra sensu Pease, 1869", pending a taxonomic/nomenclatural reappraisal.[2]

Leptothyra J. G. Cooper, 1867 is now considered a synonym of the genus Homalopoma Carpenter, 1864 [3]


The small, solid shell has a turbinate or globose shape. The operculum is multispiral with a subcentral nucleus and concave in the centre outside. The main character distinguishing Collonia from Leptothyra seems to be the peculiar peristome of the former.[4]


Species within the genus Leptothyra include:

Species brought into synonymy


  1. ^ Pease (1869). American Journal of Conchology 5(2): 70.
  2. ^ a b Leptothyra .  Retrieved through: World Register of Marine Species on 18 March 2011.
  3. ^ Bouchet, P. (2014). Leptothyra J. G. Cooper, 1867. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=751372 on 2014-06-12
  4. ^ G.W. Tryon (1888), Manual of Conchology X; Academy of Natural Sciences, Philadelphia
  5. ^ Leptothyra candida Pease, 1861.  Retrieved through: World Register of Marine Species on 20 April 2010.
  6. ^ Leptothyra filifera (Deshayes, 1863).  Retrieved through: World Register of Marine Species on 20 April 2010.
  7. ^ Gastropods.com: Leptothyra inepta
  8. ^ Leptothyra gestroi Caramagna, 1888.  Retrieved through: World Register of Marine Species on 20 April 2010.

Further reading[edit]

  • Marshall B. A. (1979). The Trochidae and Turbinidae of the Kermadec Ridge (Mollusca: Gastropoda). New Zealand Journal of Zoology 6: 521-552

External links[edit]