Description
Author: Jan Delsing
Text ID: 123352
Text Type: 1
Page: 0
Created: 2023-05-07 16:21:36 - User Delsing Jan
Language: EN
Text function: [[t:1981120,textblock=123352,elang=EN;Description]]
AS COLUMBELLA ALFREDENSIS
Shell small, elongate-ovate; flesh colored, with fairly equally distributed, decidedly, retractively slanting, brownish streaks on the middle of the whorls between the sutures and a few interrupted spiral lines of brown on the base. Nuclear whorls two, smooth. Postnuclear whorls strongly shouldered at the summit, marked by very strong, rounded, decidedly protractive axial ribs, which are about as wide as the spaces that separate them. These ribs extend prominently from the summit to the suture. On the last whorl they become evanescent on the base. Spiral sculpture apparently absent. Periphery of the last whorl well rounded. Columella marked by two feebly developed spiral cords at its insertion. Aperture moderately large, channeled at the posterior angle and decidedly so anteriorly; middle of the outer lip drawn forward into a claw-like clement; parietal wall and the inner edge of the columella glazed with a moderately thick callus.
Bartsch, P., 1915. Report on the Turton Collection of South African marine mollusks, with additional notes on other South African shells contained in the United States National Museum.