Epitonium acanthopleurum
(Verco, 1906)
Description:
Dimensions range from 4.1 mm - 41 mm high and 2.6 mm wide.
Width to height ratio: 0.63:1 ~ 0.06:1
Shell: broad conical, somewhat stout; rather solid; minute to medium. Exterior colour buff, costae white. About 11 whorls; protoconch conical with ~3 whorls smooth, sharp; teleoconch with ~8 whorls rapidly increasing. Suture closed. Umbilicate: closesd. Approximately 14 - 30 costae on the body whorl. Costae are solid with about 7 thorny tubercules on the body whorl. Costae with thorny tubercules. Intercostal spaces with minute lirae which cross the costae. Columella with 7 oblique plaits the formed by the costae. Aperture round; outer lip with a shallow gutter at the base; inner lip thin, erect.
Distribution:
South Australia; Port Albert, Victoria [Macpherson & Gabriel, 1962:115]; Cape Jaffa to Neptune Islands, South Australia [Cotton & Godfrey, 1931:5].
Habitat:
Offshore in rather deep water, 164.6-190.2 m [Cotton & Godfrey, 1931:5].
Etymology:
[greek] akanthos = thorn or spine and pleura = rib. In reference to the spiny costae.
Verco, J.C. (1906). pp: Plate 4 No 8.
Distribution
as listed in source literature
Type Material:
The holotype D13459, listed by Kaicher [1981:EP2-3049] and Brown & Neville [2015:31], has not been located in the South Australian Museum [2026] online records. The only available record matching the holotype locality is D48447; however, no type designation is given [South Australian Museum, 2026:D48447].
The following list brings together type material and other cited specimens as reported in the sources examined, grouped under the names and designations used in each source. The same specimen may appear in multiple entries drawn from different sources. Some entries concern other species included by authors for comparison; inclusion in this list does not imply synonymy.
Epitonium acanthopleurum (Verco, 1906)HolotypeSAMA D13459. [Kaicher, 1981: EP2-3049].
Scala acanthopleura Verco, 1906HolotypeSM D.13459. 35 miles southwest of Neptune Is, South Australia, Australia. 190m [104 fthms]. [Brown & Neville, 2015: 31].Type designation not provided in text/ source document35 miles S.W. of Neptune Islands, [Verco, 1906: 145].
Verco, J.C. (1906).
Shown in text as Scala acanthopleura Verco, 1906
pp: Plate 4 No 8.
pp: 145.
original description
pp: 146.
original description
Cotton, B.C. & Godfrey, F.K. (1931).
Plate I. Fig. 2.
pp: 5.
Macpherson, J.H. & Gabriel, C.J. (1962).
pp: 115.
Kaicher, S.D. (1981).
