Literature
- Thompson, T.E. & G.H. Brown 1976. British Opisthobranch Molluscs (Mollusca: Gastropoda). Synopses of the British Fauna (NS), 8: 1-203.
- Thompson, T.E. 1988. Molluscs: Benthic Opisthobranchs (Mollusca: Gastropoda). Synopses of the British fauna (NS), 8: 1-356.