Description
Author: Jan Delsing
Text ID: 99126
Text Type: 1
Page: 0
Created: 2020-02-23 14:26:47 - User Delsing Jan
Language: EN
Text function: [[t:587566,textblock=99126,elang=EN;Description]]
Shell naticoid, thin, white, with about 2 nearly smooth nuclear whorls and a little over 2 well rounded and finely sculptured normal whorls; sculpture at first of 3 spiral cords or ridges which steadily increase in number but not in strength until at the outer lip there are about 20 fine threads, these are crossed by nearly equally strong ami equally spaced lines of growth, slightly nodulous at the intersections, at first this sculpture has a cancellated appearance but later appears as a more widely spaced net of fine lines; aperture semilunate, oblique, outer lip thin, regularly curved, columella slightly curved, ending posteriorly in a thin callus spreading over the body of the shell; umbilicus narrow, deep; operculum corneous, thin. Dimensions of holotype: height of shell, 7.5 mm.; diameter 13.5 mm.
Holotype from Station 54, Hood Island, Galapagos Islands.
The early whorls of this species bear cancellated sculpture and somewhat resemble those of Vanikoro aperta Carpenter originally described from Cape San Lucas, Lower California. The shell of that species is sculptured with stronger, more nodulose spiral threads.
Hertlein, L.G. & Strong, A.M., 1951; Mollusks from the W. Coast of Mexico & Central America. Part 10