• Source: 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 Cossmann, 1917)




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 C. B. Adams, was nomen nudum, therefore leaving Teinostoma politum A. Adams, 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 A. Adams, 1861
Teinostoma hidalgoana Pilsbry, 1895
Teinostoma parvum (Stimpson, 1851) (nomen dubium)




Synonyms


Teinostoma alfredensis Bartsch, 1915: synonym of Teinostoma africanum (E. A. Smith, 1904) (junior synonym)
Teinostoma azoricum (Dautzenberg & H. Fischer, 1896): synonym of Seamountiella azorica (Dautzenberg & H. Fischer, 1896)
Teinostoma bartschi Vanatta, 1913: synonym of Solariorbis infracarinatus (Gabb, 1881)
† Teinostoma calliglyptum Dall, 1903: synonym of † Anticlimax calliglypta (Dall, 1903) (original combination)
Teinostoma clavium Pilsbry & McGinty, 1945: synonym of Teinostoma semistriatum (d'Orbigny, 1842)
Teinostoma cryptospira (A. E. Verrill, 1884): synonym of Teinostoma umbilicatum (H. C. Lea, 1843)
Teinostoma dalli Dautzenberg, 1912 : synonym of Leucorhynchia punctata (Jousseaume, 1872)
Teinostoma emmeles Melvill, 1910: synonym of Eunaticina emmeles (Melvill, 1910)
Teinostoma floridense (Dall, 1927): synonym of Cirsonella floridensis (Dall, 1927)
Teinostoma funiculus Dall, 1892: synonym of Vitrinella funiculus (Dall, 1892)
Teinostoma hondurasensis Vanatta, 1913: synonym of Solariorbis hondurasensis (Vanatta, 1913)
Teinostoma involuta Hedley, 1902: synonym of Teinostoma involutum Hedley, 1902 (incorrect gender agreement of specific epithet)
Teinostoma millepunctatum Nowell-Usticke, 1969: synonym of Teinostoma ciskae Faber, 1995
Teinostoma modesta Dall, 1889: synonym of Dillwynella modesta (Dall, 1889)
† Teinostoma opsitelotus Dall, 1892: synonym of † Vitrinella opsitelotus (Dall, 1892)
Teinostoma orbitum Hedley, 1900: synonym of Caperella orbita (Hedley, 1900) (original combination)
Teinostoma pilsbryi McGinty, 1945: synonym of Anticlimax pilsbryi (McGinty, 1945)
Teinostoma proboscidea Aguayo, 1949: synonym of Anticlimax proboscidea (Aguayo, 1949)
Teinostoma punctatum Jousseaume, 1872: synonym of Leucorhynchia punctata (Jousseaume, 1872)
Teinostoma qualum Hedley, 1899: synonym of Munditiella qualum (Hedley, 1899)
Teinostoma rotatum Hedley, 1899: synonym of Leucorhynchia rotata (Hedley, 1899) (original combination)
Teinostoma salvania Dall, 1919: synonym of Vitrinella eshnaurae Bartsch, 1907
Teinostoma sulcata [sic] : synonym of Pygmaeorota sulcata (A. Adams, 1850)
Teinostoma schumoi Vanatta, 1913: synonym ofs Solariorbis schumoi (Vanatta, 1913)
Teinostoma solida E. A. Smith, 1872: synonym of Teinostoma solidum E. A. Smith, 1872 (wrong grammatical agreement of species epithet)
Teinostoma starkeyae Hedley, 1899: synonym of Starkeyna starkeyae (Hedley, 1899)
Teinostoma sulcata [sic]: synonym of Pygmaeorota sulcata (A. Adams, 1850): synonym of Circulus sulcatus (A. Adams, 1850) (incorrect gender ending)
Teinostoma suppressa Dall, 1889: synonym of Cyclostremiscus suppressus (Dall, 1889)
Teinostoma vesta Hedley, 1901: synonym of Vitrinella vesta (Hedley, 1901) (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). ISBN 0-915826-22-4. 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. 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.

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