{{Short description|Genus of gastropods}} {{Automatic taxobox | fossil_range = Eocene to Recent; in California:Upper Pliocene to Recent | image = Borsonia epigona.JPG | image_caption = Drawing of a shell of ''Borsonia epigona'' | display_parents = 3 | taxon = Borsonia | authority = Bellardi, 1839 | synonyms_ref = <ref name="WoRMS" /> | synonyms = * ''Boettgeria'' <small>Peyrot, 1931</small> (Invalid: junior homonym of ''Boettgeria'' <small>Heynemann, 1863</small>; ''Boettgeriola'' is a replacement name) * ''Boettgeriola'' <small>Wenz, 1943</small> * ''Pleurotoma (Borsonia)'' <small>Bellardi, 1839</small> | type_species = ''Borsonia prima'' | type_species_authority = Bellardi, L., 1839 }}

'''''Borsonia''''' is a genus of sea snails, marine gastropod mollusks in the family Borsoniidae.<ref name="WoRMS">{{WRMS species|137809 |''Borsonia'' ||19 February 2026}}</ref>

==Description== The fusiform shell has medium to small size. It has an elevated spire and a well-marked siphonal canal. The whorls of the spire are usually angulated near the middle. On this angle they show elongated nodes or axial ribs. These nodes disappear almost completely at the last section of the body whorl. The sutures are distinct. The aperture is elongate and is about half as long as the shell. The simple outer lip curves back near the top and forms a deep notch. The columella is nearly straight and has none, one or two strong plications on the upper half. The anal sinus of the outer lip is not deep The sinus area between and the strong sutural cord are well excavated. There is an opening in the infrasutural depression of the body whorl.<ref>George Washington Tryon, Manual of Conchology vol. VI, p. 157; 1884</ref><ref>[https://www.biodiversitylibrary.org/page/2834907#page/551/mode/1up Grant & Gale, ''Pliocene and Pleistocene Mollusca of California and adjacent regions''; Memoirs of the San Diego Society of Natural History 1 (1931) p. 543]</ref>

==Distribution== At considerable depths in the subtropical and temperate waters of the Pacific Ocean and the Atlantic Ocean; in shallower boreal waters.

==Species== Species within the genus ''Borsonia'' include:

{{linked species list |† Borsonia aguilae | C. W. Cook, 1928 |† Borsonia allonsensis | Boussac, 1911 |† Borsonia balteata | Tate, 1898 |† Borsonia bilineata | Koenen, 1890 |† Borsonia binodosa | Koenen, 1885 | Borsonia brasiliana | Tippett, 1983 |† Borsonia britanna | Cossmann, 1896 |† Borsonia castellanensis | Boussac, 1911 |† Borsonia castellorum | Oppenheim, 1901 |† Borsonia centrema | de Ryckholt, 1862 | Borsonia ceroplasta | (R. B. Watson, 1881) |† Borsonia chaputi | Delpey, 1938 | Borsonia clarkae | Y. Zheng & S. J. Maxwell, 2026 |† Borsonia clifdenensis | H. J. Finlay, 1930 |† Borsonia coarctata | Koenen, 1865 |† Borsonia coemansi | Briart & Cornet, 1870 |† Borsonia columnata | De Gregorio, 1880 |† Borsonia costulata | Koenen, 1890 |† Borsonia crassiaxialis | P. A. Maxwell, 1992 |† Borsonia duilii | De Gregorio, 1880 |† Borsonia elongata | C.-H. Hu & X.-F. Lee, 1991 |† Borsonia eocenica | D. C. Long, 1981 | Borsonia epigona | E. von Martens, 1901 |† Borsonia fasciata | Giebel, 1864 |† Borsonia fera | De Gregorio, 1880 |† Borsonia germeraadi | K. Martin, 1933 | Borsonia hirondelleae | (Dautzenberg, 1891) |† Borsonia indica | (Tesch, 1915) | Borsonia jaffa | Cotton, 1947 | Borsonia jaya | Sysoev, 1997 |† Borsonia laevis | Foresti, 1887 |† Borsonia lugensis | Fuchs, 1870 |† Borsonia meridionalis | Lozouet, 2017 |† Borsonia mitrata | Briart & Cornet, 1870 |† Borsonia mitromorphoides | Suter, 1917 |† Borsonia miyazakiensis | Shuto, 1961 | Borsonia nipponensis | (Okutani & Iwahori, 1992) |† Borsonia obscura | Ryckholt, 1862 | Borsonia ochracea | Thiele, 1925 |† Borsonia ombonii | De Gregorio, 1880 |† Borsonia pelaezae | Vera-Peláez, 2022 |† Borsonia plioalboranensis | Vera-Peláez, 2002 |† Borsonia praecostulata | Vinassa de Regny, 1898 |† Borsonia prima | Bellardi, 1839 |† Borsonia rembangensis | Pannekoek, 1936 |† Borsonia rotundata | K. Martin, 1935 | Borsonia saccoi | Dall, 1908 |† Borsonia sativa | De Gregorio, 1890 |† Borsonia shimajiriensis | MacNeil, 1961 | Borsonia silicea | (R. B. Watson, 1881) | Borsonia smithi | Schepman, 1913 | Borsonia symbiophora | Sysoev, 1996 | Borsonia symbiotes | (Wood-Mason & Alcock, 1891) | Borsonia syngenes | (R. B. Watson, 1881) |† Borsonia tatei | A. W. B. Powell, 1944 | Borsonia timorensis | (Schepman, 1913) |† Borsonia torquayensis | A. W. B. Powell, 1944 |† Borsonia zelandica | (P. Marshall, 1919) }}

;Species brought into synonymy: * ''Borsonia agassizii'' <small>Dall, 1908</small> : synonym of ''Borsonella agassizii'' <small>(Dall, 1908)</small> * ''Borsonia bifasciata'' <small>Pease, 1860</small> : synonym of ''Kermidaphnella bifasciata'' <small>(Pease, 1860)</small> * † ''Borsonia brachyspira'' <small>Suter, 1917</small>: synonym of † ''Mitromorpha brachyspira'' <small>(Suter, 1917)</small> * ''Borsonia coronadoi'' <small>Dall, 1908</small>: synonym of ''Borsonella coronadoi'' <small>(Dall, 1908)</small> * ''Borsonia crassicostata'' <small>Pease, 1860</small>: synonym of ''Lienardia crassicostata'' <small>(Pease, 1860)</small> * ''Borsonia diegensis'' <small>Dall, 1908</small> : synonym of ''Borsonella diegensis'' <small>(Dall, 1908)</small> * † ''Borsonia inculta'' <small>Moody, 1916</small>: synonym of ''Pseudotaranis strongi'' <small>(Arnold, 1903)</small> * ''Borsonia lutea'' <small>Pease, 1860</small>: synonym of ''Kermia lutea'' <small>(Pease, 1860)</small> * ''Borsonia nebulosa'' <small>Pease, 1860</small> synonym of ''Pseudodaphnella nebulosa'' <small>(Pease, 1860)</small> * ''Borsonia rouaultii'' <small>Dall, 1889</small>: synonym of ''Cordieria rouaultii'' <small>(Dall, 1889)</small>

==References== {{Reflist}} * 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 * Lozouet (P.), 2017 ''Les Conoidea de l’Oligocène supérieur (Chattien) du bassin de l’Adour (Sud-Ouest de la France).'' Cossmanniana, t. 19, p.&nbsp;1-179

==External links== * [https://archive.today/20120710161524/http://mollus.oxfordjournals.org/content/77/3/273.full Bouchet P., Kantor Yu.I., Sysoev A. & Puillandre N. (2011) A new operational classification of the Conoidea. Journal of Molluscan Studies 77: 273-308.]

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Category:Borsonia Category:Borsoniidae Category:Gastropod genera Category:Taxa named by Luigi Bellardi