Elpidia
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Elpidia is a genus of deep-sea sea cucumbers. Members are characterised by their rod-shaped spicules which each have two pairs of obliquely placed horizontal arms and two vertical apophyses. There is a high degree of endemism in this genus with different species occupying different deep sea basins or regions.
Species
The following species are recognised in the genus Elpidia:
- Elpidia adenensisBelyaev, 1971
- Elpidia antarcticaBelyaev, 1971
- Elpidia atakamaBelyaev, 1971
- Elpidia belyaeviRogacheva, 2007
- Elpidia birsteiniBelyaev, 1971
- Elpidia chilensisBelyaev, 1971
- Elpidia decapodaBelyaev, 1975
- Elpidia echinata(R. Perrier, 1896)
- Elpidia glacialisThéel, 1876
- Elpidia gracilisBelyaev, 1975
- Elpidia heckeriBaranova, 1989
- Elpidia javanicaBelyaev, 1971
- Elpidia kermadecensisHansen, 1956
- Elpidia kurilensisBaranova & Belyaev in Belyaev, 1971
- Elpidia lataBelyaev, 1975
- Elpidia longicirrataBelyaev, 1971
- Elpidia minutissimaBelyaev, 1971
- Elpidia ninaeBelyaev, 1975
- Elpidia solomonensisHansen, 1956
- Elpidia soyoaeOgawa, Morita & Fujita, 2020
- Elpidia sundensisHansen, 1956
- Elpidia theeliHansen, 1956
- Elpidia uschakoviBelyaev, 1971