Maricola with a strongly muscularized penis. Intrabulbar seminal vesicle opening through a constriction into the proximal section of the ejaculatory duct, which receives the secretion of penial glands; distal section of ejaculatory duct provided with numerous sclerotic spines.
This family contains the genera Meixnerides Westblad, 1952 and Jugatovaria Sluys and Ball, 1989.