Cylindrolepadinae Ross & Frick, 2007 b: 24, nom. nud.
Type genus. Cylindrolepas Pilsbry, 1916: 288; by monotypy.
Diagnosis (amended). Wall more or less cylindrical, as high or higher than wide, mono-lamellar; paries with median tooth weakly developed, apparently without basal teeth but secondarily filled with calcareous material, median sulcus if present closed; few relatively prominent, lateral teeth on each side of median tooth; lateral sulci likely present, few in number and bounded by rather wide denticles; orifice apparently worn away by corrosion rather dehiscent.
Genus and species included. Cylindrolepas darwiniana Pilsbry, 1916.
Remarks. Frick & Zardus (2010) report that Cylindrolepas sinica Ren, 1980 represents an undescribed form of Platylepas decorata Darwin, 1854; see Zardus & Balazs (2007: 1312) for an illustration of this undescribed form. Additionally, Frick & Zardus (2010) provided additional character descriptions of this monotypic genus that are absent from Pilsbry (1916). It should be noted that Frick & Zardus (2010) contains an error in the naming of the plates of this species: CL 2 should be CL 1, and vice versa.