Circulus (gastropod)

Circulus is a genus of very small and minute sea snails with an operculum, marine gastropod mollusks in the family Vitrinellidae. [2]

Circulus
Shell of Circulus ryalli (paratype at MNHN, Paris)
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Clade: Caenogastropoda
Clade: Hypsogastropoda
Order: Littorinimorpha
Superfamily: Truncatelloidea
Family: Vitrinellidae
Genus: Circulus
Jeffreys, 1865
Type species
Delphinula duminyi
Requien, 1848
Synonyms[1]
  • Circulus (Circulus) Jeffreys, 1865
  • Pygmaeorota Kuroda & Habe, 1954
  • Soyorota Habe, 1961
  • Trochus (Circulus) Jeffreys, 1865 (original rank)

Species

According to the World Register of Marine Species (WoRMS), the following species with valid names are included within the genus Circulus [3]

  • † Circulus bicarinatus (Lamarck, 1804)
  • Circulus biporcatus (A. Adams, 1863)
  • Circulus choshiensis (Habe, 1961)
  • Circulus cinguliferus (A. Adams, 1850)
  • Circulus congoensis (Thiele, 1925)
  • Circulus cosmius Bartsch, 1907
  • Circulus cycloma (Barnard, 1964)
  • Circulus delectabilis (Tate, 1899)
  • Circulus deprinsi Rolán & Swinnen, 2013
  • † Circulus duplicarina (Marwick, 1929)
  • † Circulus edomitus (Marwick, 1931)
  • † Circulus enaulus Lozouet, 1998
  • † Circulus estotensis Lozouet, 1998
  • Circulus harriettae (Petterd, 1884)
  • † Circulus helicoides (Hutton, 1877)
  • † Circulus inornatus P. Marshall, 1919
  • Circulus liratus (A. E. Verrill, 1882)
  • Circulus liricincta (Garrett, 1873)
  • Circulus marchei (Jousseaume, 1872)
  • † Circulus megalomphalus (Cossmann, 1919)
  • Circulus microsculpturatus Oliver & Rolán, 2011
  • Circulus modestus (Gould, 1859)
  • Circulus mortoni Ponder, 1994
  • Circulus novemcarinatus (Melvill, 1906)
  • Circulus octoliratus (Carpenter, 1856)
  • Circulus orbignyi (P. Fischer, 1857)
  • † Circulus paulensis Lozouet, 1998
  • Circulus pellucidus (E. A. Smith, 1910)
  • † Circulus planorbillus (Dujardin, 1837)
  • † Circulus politus Suter, 1917
  • Circulus pseudopraecedens Adam & Knudsen, 1969
  • Circulus rossellinus Dall, 1919
  • Circulus ryalli Oliver & Rolán, 2011
  • Circulus semisculptus (Olsson & McGinty, 1958)
  • Circulus senegalensis Adam & Knudsen, 1969
  • † Circulus sigaretornuformis Lozouet, 1998
  • Circulus smithi Bush, 1897
  • Circulus soyoae (Habe, 1961)
  • Circulus stephani Rolán & Ryall, 2002
  • Circulus striatus (Philippi, 1836)
  • † Circulus subcirculus (Cossmann & Peyrot, 1916)
  • Circulus supranitidus (Wood S., 1848)
  • Circulus teramachii (Habe, 1958)
  • Circulus texanus (Moore, 1965)
  • Circulus tornatus (A. Adams, 1864)

The Indo-Pacific Molluscan Database also mentions the following species with names in current use :[1]

  • Circulus acutilirata (Thiele, 1925)
  • Circulus aequatorialis (Thiele, 1925)
  • Circulus angulata (Adams)
  • Circulus callusa (Laseron, 1958)
  • Circulus duplicatus (Lischke, 1872)
  • Circulus gyalum (Melvill, 1904)
  • Circulus octolirata (P. Carpenter, 1856)
  • Circulus pachyston (Verco, 1907)
  • Circulus planorbis (Laseron, 1958)
  • Circulus sculptilis (Garrett, 1873)
  • Circulus transculpta (Laseron, 1958)
  • Circulus venusta (Hedley, 1901)
  • Circulus virginiae (Jousseaume, 1872)
Species brought into synonymy
  • Circulus biporcata [sic]: synonym of Circulus biporcatus (A. Adams, 1863)
  • Circulus carinulatus Locard, 1889: synonym of Circulus striatus (Philippi, 1836)
  • Circulus costulatus Locard, 1889: synonym of Circulus striatus (Philippi, 1836)
  • Circulus cubanus Pilsbry & Aguayo, 1933: synonym of Cyclostremiscus cubanus (Pilsbry & Aguayo, 1933)
  • Circulus dalli Bush, 1897: synonym of Cyclostremiscus dalli (Bush, 1897)
  • Circulus formosissimus Brugnone, 1873: synonym of Skeneoides jeffreysii (Monterosato, 1872)
  • Circulus hendersoni (Dall, 1927): synonym of Cyclostremiscus hendersoni (Dall, 1927)
  • Circulus jeffreysii Monterosato, 1872: synonym of Skeneoides jeffreysii (Monterosato, 1872)
  • Circulus margaritiformis (Dall, 1927): synonym of Cirsonella margaritiformis (Dall, 1927)
  • Circulus modesta [sic]: synonym of Circulus modestus (Gould, 1859)
  • Circulus stirophorus M. Smith, 1937: synonym of Cyclostremiscus beauii (P. Fischer, 1857)
  • Circulus tatei (Angas, 1878): synonym of Elachorbis tatei (Angas, 1878)
  • Circulus tornata [sic]: synonym of Circulus tornatus (A. Adams, 1864)
  • Circulus translucens (Dall, 1927): synonym of Xyloskenea translucens (Dall, 1927)
  • Circulus tricarinatus (Wood S., 1848): synonym of accepted as Circulus striatus (Philippi, 1836)
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References
  1. OBIS : Circulus
  2. MolluscaBase eds. (2020). MolluscaBase. Circulus Jeffreys, 1865. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=137626 on 2020-08-15
  3. WoRMS : Circulus; accessed : 11 July 2011
  • Oliver, J. & Rolan, E., 2011. The family Tornidae (Gsatropoda: Rissooidea) in the East Atlantic, 2. Circulinae. Iberus 29(1): 9-33


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