| Species | Name Used |
|---|---|
| Umbellula encrinus Linnaeus, 1758 | Umbellula encrinus (p. 435 ) |
| Unciola leucopis (Krøyer, 1845) | Unciola leucopis (p. 439 ) |
| Urasterias lincki (Müller & Troschel, 1842) | Urasterias lincki (p. 440 ) |
| Volutopsius norwegicus (Gmelin, 1791) | Volutopsius norvegicus (p. 437 ) |
| Yoldia hyperborea (Gould, 1841) | Yoldia hyperborea (p. 438 ) |
| Yoldiella intermedia (Sars, 1865) | Yoldiella intermedia (p. 438 ) |
| Yoldiella lenticula (Moller, 1842) | Yoldiella lenticula (p. 438 ) |
| Yoldiella lucida (Loven, 1846) | Yoldiella lucida (p. 438 ) |