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''Oncis'' is a genus of air-breathing sea slugs, a shell-less marine pulmonate gastropod mollusks in the family Onchidiidae. The name of this genus has gone through a lot of tribulations. It was originally named ''Onchis'' by Férussac in 1821. In 1822 Fleming named ''Peronia'' with the same type species. In 1847 Herrmannsen renamed ''Onchis'' Férussac as ''Oncis'' for unjustified reasons. In 1893 Plate created the new name ''Oncis'' not Herrmanssen. And in 1938 Baker replaced the name ''Oncis'' Plate, 1893 by ''Platevindex'' Baker, 1938 (with type species ''Platevindex coriaceum'' Semper, 1885).〔(Benoit Dayrat, Onchidiidae, Diversity and Evolution )〕 However, ''Oncis'' Plate, 1893, is an available and potentially valid name, and ''Platevindex'' is an unnecessary replacement name as "Oncis" was not treated by Herrmannsen (1847) as the valid name of a taxon (ICZN Chapter 11 article 50.5) 〔(WoRMS : Platevindex )〕 ==Species== According to the World Register of Marine Species (WoRMS), the following species with valid names are included within the genus ''Oncis'' :〔(WoRMS : Oncis; accessed : 30 September 2010 )〕 * ''Oncis amboinae'' (Plate, 1893) * ''Oncis cinerea'' Odhner, 1917 * ''Oncis granulosa'' (Lesson, 1826) * ''Oncis lutea'' (Semper, 1885) * ''Oncis martensi'' Plate, 1893 * ''Oncis mortoni'' (Britton, 1984) * ''Oncis ponsonbyi'' (Collinge, 1901) * ''Oncis schneideri'' Hoffmann, 1932 * ''Oncis semperi'' Plate, 1893 * ''Oncis stuxbergi'' (Westerlund, 1883) ; Species brought into synonymy : * ''Oncis apoikistes'' (Tillier, 1983) : synonym of ''Semperoncis montana'' (Plate, 1893) * ''Oncis coeca'' Plate, 1893 accepted as ''Oncis amboinae'' (Plate, 1893) * ''Oncis inspectabilis'' Plate, 1893 accepted as ''Oncis stuxbergi'' (Westerlund, 1883) * ''Oncis lata'' Plate, 1893 accepted as ''Oncis granulosa'' (Lesson, 1826) * ''Oncis montana'' Plate, 1893 accepted as ''Semperoncis montana'' (Plate, 1893) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Oncis」の詳細全文を読む スポンサード リンク
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