Type species: Eschara crustulenta Pallas, 1766
This genus includes the species:
| Einhornia arctica | (Borg, 1931) | Recent | Atlantic northeast |
| Einhornia crustulenta | (Pallas, 1766) | Recent Pleistocene |
Northeast Atlantic USA |
| Einhornia korobokkura | (Nikulina, 2006) | Recent | Japan Hokkaido |
| Einhornia moskvikvendi | (Nikulina, 2008) | Recent | Baltic, USA |
| Einhornia pallasae | Gontar, 2011 | Recent | Sea of Azov |
| Einhornia venturaensis | (Banta & Crosby, 1994) | Recent | Gulf of California |
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| Einhornia korobokkura (Thanks to Matt Dick) |
Electra crustulenta at MarLIN - Marine Life Information Network for Britain and Ireland.