Description
Author: Jan Delsing
Text ID: 89340
Text Type: 1
Page: 0
Created: 2018-08-12 14:18:07 - User Delsing Jan
Language: EN
Text function: [[t:1253571,textblock=89340,elang=EN;Description]]
Shell of medium size, with a slender, turrited spire, dingy white; nuclear and probably the first 1 or 2 postnuclear whorls lost; remaining whorls 10, narrowly tabulated, with deep sutures, regularly increasing in size, the upper whorls with the sculpture much worn; axial sculpture of (on the last whorl 20) retractive, strongly reflected ribs, continuous from suture to suture, of which every fourth, fifth or sixth is swollen to form a strong varix; spiral sculpture of 7 cords in the interspaces between the axial ribs and numerous fine striae; the reflected faces of the varices with close, waved, axial striae, that of the intermediate axial ribs below the slightly coronated shoulder with 5 or more sharp, waved, axial laminae, the points of which correspond to the spiral cords, and in some cases span the interspaces between the axial ribs; base with a strong spiral cord forming a narrow basal disk, the axial ribs expanded on the cord but become narrow where they fuse with the inner lip; aperture circular, the outer and basal lip thickened by the last varix. The type measures: length, 37.5 mm.; maximum diameter, including the varices. 13.8 mm.
Hertlein, L.G. & Strong, A.M., 1951; Mollusks from the W. Coast of Mexico & Central America. Part 10