Mantle short, slender; fins rhomboidal with
round lateral angles, length more than 50% of mantle length. Tentacular
clubs expanded, lanceolate;medial manus suckers twice the diameter
of lateral suckers and with 18 to 30 sharp teeth on the sucker rings.
Arm sucker rings with 3 to 7 very low broad squared teeth; left
ventral arm modified in males with palisade-like fleshy papillae on
the distal 60%