Oncis

Oncis is a genus of air-breathing sea slugs, a shell-less marine pulmonate gastropod mollusks in the family Onchidiidae.[1]

Oncis
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Heterobranchia
clade Euthyneura
clade Panpulmonata
clade Systellommatophora
Superfamily:
Onchidioidea
Family:
Onchidiidae
Genus:
Oncis

Plate, 1893
Synonyms[1]

Platevindex H.B. Baker, 1938

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).[2] 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) [3]

Species

According to the World Register of Marine Species (WoRMS), the following species with valid names are included within the genus Oncis :[4]

  • 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)

References
  1. Oncis Plate, 1893 . Retrieved through: World Register of Marine Species on 30 September 2010.
  2. Benoit Dayrat, Onchidiidae, Diversity and Evolution
  3. WoRMS : Platevindex
  4. WoRMS : Oncis; accessed : 30 September 2010
  • Dayrat, Benoît (2009). "Review of the current knowledge of the systematics of Onchidiidae (Mollusca: Gastropoda: Pulmonata) with a checklist of nominal species" (PDF). Zootaxa. 2068: 1–26. doi:10.11646/zootaxa.2068.1.1. Archived from the original (PDF) on 15 June 2010.


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