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Teinostoma

Teinostoma is a genus of minute sea snails, marine gastropod mollusks or micromollusks in the family Teinostomatidae.

This genus used to be placed within the family Skeneidae or family Tornidae(as subfamily Teinostomatinae <small>Cossmann, 1917</small>)

Shell description

The shells of species in this genus are usually white and glossy, are transparent when fresh, and are only a few millimeters in maximum size.

The shell is orbicular, depressed, subspiral and polished. The body whorl is rounded at the periphery. The umbilical region is covered with a large, flat callosity. The aperture is transverse, rounded, greatly produced and elongated, ending anteriorly in a slightly canaliculated point. The inner lip is smooth, callous, not emarginate or truncate anteriorly. The outer lip is thin, simple, not margined or reflected.

Type species

There were two species cited along with the description of Teinostoma by H. & A. Adams (1853) but one of them, Teinostoma anomalum <small>C. B. Adams</small>, was nomen nudum, therefore leaving Teinostoma politum <small>A. Adams</small>, made available therein by a figure, as type species by monotypy. ICZN art. 67.2.1. defines "originally included nominal species" to comprise only species that have been cited in the original publication by an available name. The intended description of Teinostoma as "new genus" by A. Adams appeared only later (1855) and there T. politum is the sole included species.

Species

This genus includes the following species:

Taxa inquirenda:
  • Teinostoma carpenteri <small>A. Adams, 1861</small>
  • Teinostoma hidalgoana <small>Pilsbry, 1895</small>
  • Teinostoma parvum <small>(Stimpson, 1851)</small> (nomen dubium)

Synonyms

  • Teinostoma alfredensis <small>Bartsch, 1915</small>: synonym of Teinostoma africanum <small>(E. A. Smith, 1904)</small> (junior synonym)
  • Teinostoma azoricum <small>(Dautzenberg & H. Fischer, 1896)</small>: synonym of Seamountiella azorica <small>(Dautzenberg & H. Fischer, 1896)</small>
  • Teinostoma bartschi <small>Vanatta, 1913</small>: synonym of Solariorbis infracarinatus <small>(Gabb, 1881)</small>
  • † Teinostoma calliglyptum <small>Dall, 1903</small>: synonym of † Anticlimax calliglypta <small>(Dall, 1903)</small> (original combination)
  • Teinostoma clavium <small>Pilsbry & McGinty, 1945</small>: synonym of Teinostoma semistriatum <small>(d'Orbigny, 1842)</small>
  • Teinostoma cryptospira <small>(A. E. Verrill, 1884)</small>: synonym of Teinostoma umbilicatum <small>(</small>H. C. Lea, 1843)
  • Teinostoma dalli <small>Dautzenberg, 1912</small> : synonym of Leucorhynchia punctata <small>(Jousseaume, 1872)</small>
  • Teinostoma emmeles <small>Melvill, 1910</small>: synonym of Eunaticina emmeles <small>(Melvill, 1910)</small>
  • Teinostoma floridense <small>(Dall, 1927)</small>: synonym of Cirsonella floridensis <small>(Dall, 1927)</small>
  • Teinostoma funiculus <small>Dall, 1892</small>: synonym of Vitrinella funiculus <small>(Dall, 1892)</small>
  • Teinostoma hondurasensis <small>Vanatta, 1913</small>: synonym of Solariorbis hondurasensis <small>(Vanatta, 1913)</small>
  • Teinostoma involuta <small>Hedley, 1902</small>: synonym of Teinostoma involutum <small>Hedley, 1902</small> (incorrect gender agreement of specific epithet)
  • Teinostoma millepunctatum <small>Nowell-Usticke, 1969</small>: synonym of Teinostoma ciskae <small>Faber, 1995</small>
  • Teinostoma modesta <small>Dall, 1889</small>: synonym of Dillwynella modesta <small>(Dall, 1889)</small>
  • † Teinostoma opsitelotus <small>Dall, 1892</small>: synonym of † Vitrinella opsitelotus <small>(Dall, 1892)</small>
  • Teinostoma orbitum <small>Hedley, 1900</small>: synonym of Caperella orbita <small>(Hedley, 1900)</small> (original combination)
  • Teinostoma pilsbryi <small>McGinty, 1945</small>: synonym of Anticlimax pilsbryi <small>(McGinty, 1945)</small>
  • Teinostoma proboscidea <small>Aguayo, 1949</small>: synonym of Anticlimax proboscidea <small>(Aguayo, 1949)</small>
  • Teinostoma punctatum <small>Jousseaume, 1872</small>: synonym of Leucorhynchia punctata <small>(Jousseaume, 1872)</small>
  • Teinostoma qualum <small>Hedley, 1899</small>: synonym of Munditiella qualum <small>(Hedley, 1899)</small>
  • Teinostoma rotatum <small>Hedley, 1899</small>: synonym of Leucorhynchia rotata <small>(Hedley, 1899)</small> (original combination)
  • Teinostoma salvania <small>Dall, 1919</small>: synonym of Vitrinella eshnaurae <small>Bartsch, 1907</small>
  • Teinostoma sulcata [sic] : synonym of Pygmaeorota sulcata <small>(A. Adams, 1850)</small>
  • Teinostoma schumoi <small>Vanatta, 1913</small>: synonym ofs Solariorbis schumoi <small>(Vanatta, 1913)</small>
  • Teinostoma solida <small>E. A. Smith, 1872</small>: synonym of Teinostoma solidum <small>E. A. Smith, 1872</small> (wrong grammatical agreement of species epithet)
  • Teinostoma starkeyae <small>Hedley, 1899</small>: synonym of Starkeyna starkeyae <small>(Hedley, 1899)</small>
  • Teinostoma sulcata [sic]: synonym of Pygmaeorota sulcata <small>(A. Adams, 1850)</small>: synonym of Circulus sulcatus <small>(A. Adams, 1850)</small> (incorrect gender ending)
  • Teinostoma suppressa <small>Dall, 1889</small>: synonym of Cyclostremiscus suppressus <small>(Dall, 1889)</small>
  • Teinostoma vesta <small>Hedley, 1901</small>: synonym of Vitrinella vesta<small> (Hedley, 1901) </small> (original combination)

References

  • Nomenclator Zoologicus info
  • Gofas, S.; Afonso, J.P.; Brandào, M. (Ed.). (S.a.). Conchas e Moluscos de Angola = Coquillages et Mollusques d'Angola. [Shells and molluscs of Angola]. Universidade Agostinho / Elf Aquitaine Angola: Angola. 140 pp.
  • Vaught, K.C. (1989). A classification of the living Mollusca. American Malacologists: Melbourne, FL (USA). . XII, 195 pp.
  • Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp.&nbsp;180–213
  • Spencer, H.; Marshall. B. (2009). All Mollusca except Opisthobranchia. In: Gordon, D. (Ed.) (2009). New Zealand Inventory of Biodiversity. Volume One: Kingdom Animalia. 584 pp
  • Rubio F., Fernández-Garcés R. & Rolán E. (2011) The family Tornidae (Gastropoda, Rissooidea) in the Caribbean and neighboring areas. Iberus 29(2): 1-230.