Plastiscala

Proposed in 1936, Iredales original description is as follows:
Shell small, awl-shaped, solid, apex mamillate, sculpture weak longitudinal ribs and strong concentric liræ, varicose, mouth roundly oval, imperforate. Whorls eight and a half, plus one and a half smooth mamillate whorls, the adult sculpture showing about twenty rounded depressed longitudinal ribs overridden by stout cords, about six on the penultimate whorl extending on to the base on the last whorl, where there is an indistinct encircling basal cord.

Wilson (1993: 274) considered Plastiscala to be a subgenus of Cirsotrema Mörch, 1852 while Kilburn (1985: 274) and Nakayama (2003: 50) considers it a full genus.

Genotype:

Type species (o.d.) Scala morchi Angas, 1871.

Literature cited:

Brown, L. & Neville, B.D. (2015). Catalog of the recent taxa of the families Epitoniidae and Nystiellidae (Mollusca: Gastropoda) with a bibliography of the descriptive and systematic literature. Zootaxa. 3907(1). pp: 001-188
Iredale, T. (1936). Australian molluscan notes. No. 2.. Records of the Australian Museum. 19(5). pp: 267-340
Kilburn, R.N (1985). The family Epitoniidae (Mollusca: Gastropoda) in southern Africa and Mozambique. Annals of the Natal Museum. 27(1). pp: 239-337
Nakayama, T. (2003). A Review of Northwest Pacific Epitoniids. Monographs of Marine Mollusca. 6. pp: 50