Russell, 1958
Small, diameter typically ca. 10-30 mm. Marginal tentacles 20-26; outline of stomach recalling Ace of Clubs but with the four lobes equal; the single "hypertrophied" tentacle in exactly same radius as septum between lobes of stomach; no papillae on marginal lappets; peripheral radial septa straight, parallel, not diverging centripetally, terminating at level of inner edge of coronal muscle.