A new species, Paralepidapedon williamsi, is described from the fish Cottunculus microps and an unidentified fish of the suborder Cottoidei in the NE Atlantic Ocean. This species is the first member of the genus to be recognized in the Atlantic Ocean. Its general morphology is similar to that of the other members of the genus, but it is distinguished by its large eggs and the relatively few gland-cells associated with the external seminal vesicle. The genus Paralepidapedon, which differs from Neolepidapedon in the possession of a uroproct, is reviewed and a key to the species given. The genus is considered to include five species.
