Description
Author: Jan Delsing
Text ID: 111194
Text Type: 1
Page: 0
Created: 2021-09-02 16:20:18 - User Delsing Jan
Language: EN
Text function: [[t:540223,textblock=111194,elang=EN;Description]]
Shell rather slender and elevated, colour whitish to yellowish, with irregularly scattered dark brown spots on the keels. (Some co-types have few or no spots.) Whorls four, rounded; spire bicarinate, with two smaller keels on the shoulder. The body whorl has eight keels, the two at the periphery the strongest, the last, which is nodulous, enclosing the umbilical area. The keels am interstices are crossed by numerous fine axial riblets, about 25 to 30 on a half turn of the body whorl. These riblets corrugate the keels, but do not form nodules. Outer lip rather thin, expanded. Columella smooth, not toothed , reflexed, so as to hide the small umbilicus from a front view. Height 4.5 mm Breadth 4 mm
Type, with 20 others, from 100 fathoms, seven miles east of Cape Pillar. Appears to belong to about the hundred fathom line, as it has not been taken in shallower dredgings. It was incorrectly identified as scabriusculus Ad. and Angas, in the Cape Pillar mollusca, but is distinguished from that species by its more slender form and light texture, and the far finer sculpture, the radials in particular being nearly twice as numerous, and in the smooth columella.
May, W.L., 1915. Additions to the Tasmanian Marine Mollusca, with descriptions of new species.