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 Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Littorinimorpha
Superfamily: Truncatelloidea
Family: Vitrinellidae
Genus: Circulus
Jeffreys, 1865
Type species
Delphinula duminyi
Requien, 1848
Synonyms[1]
  • Circlotoma Laseron, 1958
  • Circulus (Circulus) Jeffreys, 1865
  • Cyclostrema (Lydiphnis) Melvill, 1906 junior subjective synonym (original combination)
  • Elachorbis Iredale, 1915
  • Lydiphnis Melvill, 1906 junior subjective synonym
  • Lydiphnis (Cymatopteryx) Pilsbry & Olssen, 1946 junior subjective synonym
  • Lydiphnis (Mesopteryx) Pilsbry & Olssen, 1945 junior homonym (of Mesopteryx Saussure, 1870 (Orthoptera )
  • Pygmaeorota Kuroda & Habe, 1954
  • Pygmaeorota (Lydiphnopsis) Shuto, 1969 junior subjective synonym
  • Pygmaeorota (Pygmaeorota) Kuroda & Habe, 1954
  • Pygmaeorota (Soyorota) Habe, 1961
  • Pygmaerota Kuroda & Habe, 1952 (nude name)
  • Soyorota Habe, 1961
  • Trochus (Circulus) Jeffreys, 1865 (original rank)
  • Vitrinella (Lydiphnis) Melvill, 1906

Species

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

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

Species brought into synonymy
  • Circulus bailyi Hertlein & A. M. Strong, 1951: synonym of Cyclostremiscus bailyi (Hertlein & A. M. Strong, 1951)
  • Circulus biporcata [sic]: synonym of Circulus biporcatus (A. Adams, 1863)
  • Circulus carinulatus Locard, 1889: synonym of Circulus striatus (Philippi, 1836)
  • Circulus cerrosensis Bartsch, 1907 accepted as Cyclostremiscus cerrosensis (Bartsch, 1907)
  • Circulus cingulatus Bartrum, 1919 † accepted as Pterolabrella cingulata (Bartrum, 1919)
  • 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 delectabile (Tate, 1899) accepted as Circulus delectabilis (Tate, 1899) (unaccepted > incorrect grammatical agreement of specific epithet)
  • Circulus diomedeae Bartsch, 1911 accepted as Cyclostremiscus diomedeae (Bartsch, 1911)
  • 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 madreensis F. Baker, Hanna & A. M. Strong, 1938 accepted as Cyclostremiscus madreensis (F. Baker, Hanna & A. M. Strong, 1938)
  • Circulus margaritiformis (Dall, 1927): synonym of Cirsonella margaritiformis (Dall, 1927)
  • Circulus modesta [sic]: synonym of Circulus modestus (Gould, 1859)
  • Circulus nicholsoni A. M. Strong & Hertlein, 1939 accepted as Episcynia nicholsoni (A. M. Strong & Hertlein, 1939)
  • Circulus perlatus Pelseneer, 1903 accepted as Orbitestella perlata (Pelseneer, 1903) (original combination)
  • Circulus philippinensis Rubio & Rolán, 2022: synonym of Circulus pacomartinezi Rubio & Rolán, 2023 (junior homonym, invalid: secondary junior homonym of Circulus philippinensis (Shuto, 1969); C. pacomartinezi is a replacement name)
  • Circulus sarsi (Bush, 1897) accepted as Orbitestella sarsi (Bush, 1897)
  • Circulus stirophorus M. Smith, 1937: synonym of Cyclostremiscus beauii (P. Fischer, 1857)
  • * Circulus taigai Hertlein & A. M. Strong, 1951 accepted as Cyclostremiscus taigai (Hertlein & A. M. Strong, 1951)
  • Circulus tornata [sic]: synonym of Circulus tornatus (A. Adams, 1864)
  • Circulus tornatus (A. Adams, 1864): synonym of Tuberes tornatus (A. Adams, 1864) (unaccepted > superseded combination)
  • Circulus translucens (Dall, 1927): synonym of Xyloskenea translucens (Dall, 1927)
  • Circulus tricarinatus (Wood S., 1848): synonym of accepted as Circulus striatus (Philippi, 1836)

References

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  1. ^ a b 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 15 August 2020
  3. ^ WoRMS : Circulus; accessed : 11 July 2011
  • Kuroda T. & Habe T. 1952. Check list and bibliography of the Recent marine Mollusca of Japan. Leo W. Stach, Tokyo. 210 pp
  • Habe, T. (1961). Descriptions of fifteen new species of Japanese shells. Venus. 21(4): 416–431.
  • Oliver, J. & Rolan, E., 2011. The family Tornidae (Gsatropoda: Rissooidea) in the East Atlantic, 2. Circulinae. Iberus 29(1): 9–33
  • Rubio, F. & Rolán, E. (2022). New species of Vitrinellidae (Gastropoda: Truncatelloidea) from the Indo-Pacific. The genus Circulus Jeffreys, 1865. Museo de Historia Natural, Universidad Santiago de Compostela. 422 pp.
  • Rubio F & Rolán E. , 2023. Circulus pacomartinezi nomen novum for Circulus philippinensis Rubio & Rolán, 2022, pag. 359. Iberus 41(1): 151–152
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