Seguenzia is a genus of sea snails, marine gastropod mollusks in the family Seguenziidae.
This genus was named after Giuseppe Seguenza (1833âÂÂ1889), the palaeontologist at Messina, Italy.
Description
The thin shell has a turbinate or subtrochoid shape. It is translucent, the outer layer very slight, somewhat nacreous in fresh specimens. There is no epidermis. The shell contains spiral carinations. The upper part of the body whorl is deeply and widely grooved. The aperture is irregular and sinuous behind. The columella is twisted and abruptly notched below. It has a small tooth-like process. The base of the shell shows a sinus. It is deeply umbilicated or imperforate. The thin operculum is oval, with a subcentral nucleus and with obsolete, numerous concentric lines.
Species
According to the World Register of Marine Species (WoRMS), the following species with valid name are included within the genus Seguenzia :
- Seguenzia antarctica <small>Thiele, 1925</small>
- Seguenzia balicasagensis <small>Poppe, Tagaro & Dekker, 2006</small>
- Seguenzia beloni <small>Poppe, Tagaro & Dekker, 2006</small>
- Seguenzia cervola <small>Dall, 1919</small>
- Seguenzia chariessa <small>Marshall, 1991</small>
- Seguenzia chelina <small>Marshall, 1983</small>
- Seguenzia compta <small>Marshall, 1983</small>
- Seguenzia conopia <small>Marshall, 1983</small>
- Seguenzia costulifera <small>Schepman, 1909</small>
- Seguenzia dabfari <small>Poppe, Tagaro & Dekker, 2006</small>
- Seguenzia dautzenbergi <small>Schepman, 1909</small>
- â Seguenzia donaldi <small>Ladd, 1982</small>
- Seguenzia eidalima <small>Marshall, 1991</small>
- Seguenzia elegans <small>Jeffreys, 1885</small>
- Seguenzia elegantissima <small>Poppe, Tagaro & Dekker, 2006</small>
- Seguenzia emmeles <small>Marshall, 1991</small>
- Seguenzia engonia <small>B.A. Marshall, 1991</small>
- Seguenzia eritima <small>Verrill, 1884</small>
- Seguenzia eutyches <small>Marshall, 1991</small>
- Seguenzia fatigans <small>Barnard, 1963</small>
- Seguenzia floridana <small>Dall, 1927</small>
- Seguenzia formosa <small>Jeffreys, 1876</small>
- Seguenzia fulgida <small>Marshall, 1983</small>
- Seguenzia giovia <small>Dall, 1919</small>
- â Seguenzia glabella <small>B. A. Marshall, 1983</small>
- Seguenzia hapala <small>Woodring, 1928</small>
- Seguenzia hosyu <small>Habe, 1953</small>
- Seguenzia iota <small>Marshall, 1991</small>
- Seguenzia keikoae <small>Poppe, Tagaro & Dekker, 2006</small>
- Seguenzia levii <small>Marshall, 1991</small>
- Seguenzia lineata <small>Watson, 1879</small>
- Seguenzia louiseae <small>A.H. Clarke, 1961</small>
- Seguenzia macleani <small>Geiger, 2017</small>
- Seguenzia matara <small>Marshall, 1988</small>
- Seguenzia metivieri <small>Marshall, 1991</small>
- Seguenzia mirabilis <small>Okutani, 1964</small>
- Seguenzia monocingulata <small>Seguenza, 1876</small>
- Seguenzia nipponica <small>Okutani, 1964</small>
- Seguenzia nitida <small>Verrill, 1884</small>
- Seguenzia occidentalis <small>Dall, 1908</small>
- Seguenzia orientalis <small>Thiele, 1925</small>
- Seguenzia platamodes <small>Marshall, 1991</small>
- Seguenzia praeceps <small>Marshall, 1991</small>
- â Seguenzia prisca <small>B. A. Marshall, 1983</small>
- â Seguenzia propheta <small>Lozouet, 1999</small>
- Seguenzia richeri <small>Marshall, 1991</small>
- â Seguenzia serrata <small>B. A. Marshall, 1983</small>
- Seguenzia soyoae <small>(Okutani, 1964)</small>
- â Seguenzia statiana <small>Sosso, Bertolaso & Dell'Angelo, 2020</small>
- Seguenzia stegastris <small>Marshall, 1991</small>
- Seguenzia stephanica <small>Dall, 1908</small>
- Seguenzia sumatrensis <small>Thiele, 1925</small>
- Seguenzia textilis <small>Marshall, 1983</small>
- Seguenzia transenna <small>Marshall, 1983</small>
- Seguenzia triteia <small>Salvador, Cavallari & Simone, 2014</small>
- Seguenzia trochiformis <small>Poppe, Tagaro & Dekker, 2006</small>
- Seguenzia wareni <small>Marshall, 1991</small>
Species brought into synonymy:
- Seguenzia caliana <small>Dall, 1919</small>: synonym of Seguenzia stephanica <small>Dall, 1908</small>
- Seguenzia carinata <small>Jeffreys, 1876</small> synonym of Carenzia carinata <small>(Jeffreys, 1877)</small>
- Seguenzia certoma <small>Dall, 1919</small>: synonym of Seguenzia stephanica <small>Dall, 1908</small>
- Seguenzia cazioti <small>Dautzenberg, 1925</small>: synonym of Quinnia cazioti <small>(Dautzenberg, 1925)</small>
- Seguenzia ionica <small>Watson, 1878</small> synonym of Quinnia ionica <small>(Watson, 1878)</small>
- Seguenzia laxa <small>Jeffreys, 1885</small>: synonym of Haloceras laxa <small>(Jeffreys, 1885)</small>
- Seguenzia megaloconcha <small>Rokop, 1972</small>: synonym of Seguenzia cervola <small>Dall, 1919</small>
- Seguenzia melvillii <small>Schepman, 1909</small>: synonym of Carenzia melvillii <small>(Schepman, 1909)</small>
- Seguenzia polita <small>Verco, 1906</small>: synonym of Quinnia polita <small>(Verco, 1906)</small>
- Seguenzia quinni <small>J. H. McLean, 1985</small>: synonym of Seguenzia giovia <small>Dall, 1919</small>
- Seguenzia reticulata <small>(Philippi, 1844)</small>: synonym of Ancistrobasis reticulata <small>(Philippi, 1844)</small>
- Seguenzia rushi <small>Dall, 1927</small>: synonym of Quinnia rushi <small>(, 1927)</small>
- Seguenzia siberutensis <small>Thiele, 1925</small>: synonym of Halystina siberutensis <small>(Thiele, 1925)</small>
- Seguenzia simplex <small>Barnard, 1963</small>: synonym of Halystina simplex <small>(Barnard, 1963)</small>
- Seguenzia sykesi <small>Schepman, 1909</small>: synonym of Quinnia sykesi <small>(Schepman, 1909)</small>
- Seguenzia tricarinata <small>Jeffreys, 1885</small>: synonym of Haloceras tricarinata <small>(Jeffreys, 1885)</small>
References
- Quinn J.F. (1983). A revision of the Seguenziacea Verrill, 1884 (Gastropoda : Prosobranchia). I. Summary and evaluation of the superfamily, Proceedings of the Biological Society of Washington, 96(4): pp. 725âÂÂ757
External links