Subfamily Xenobalaninae Gruvel, 1905: 280

Type genus. Xenobalanus Steenstrup, 1851: 61; by original designation of Gruvel, (1905: 280).

Diagnosis. Wall much reduced in sizes and structure, including loss of T-shaped flanges, serving as shallow anchor for extraparietal, membranous stalk, body chamber and apertural hood; opercular parts lost. Genus and species included. Xenobalanus globicipitis Steenstrup, 1851 .