Psolus Oken, 1815

O’Loughlin, Mark & Whitfield, Emily, 2010, New species of Psolus Oken from Antarctica (Echinodermata: Holothuroidea: Psolidae), Zootaxa 2528, pp. 61-68 : 62

Psolus Oken, 1815

Diagnosis. Species of Psolidae with large imbricating or contiguous dorsal and lateral scales; ventro-lateral scales at margin clearly demarcated from thin sole that lacks conspicuous scales; tube feet absent dorsally and laterally, except sometimes present orally and anally.

Remarks. In their key to genera of Psolidae, O’Loughlin & Maric 2008 stated that the conspicuous dorsal and lateral scales of species of Psolus lacked calcareous towers. A close dorsal and lateral cover of apically spinous towers on the scales is the diagnostically distinctive character of one of the new species described below. The diagnosis in O’Loughlin & Maric 2008 has been appropriately emended here.