Description
Author: Jan Delsing
Text ID: 131338
Text Type: 1
Page: 0
Created: 2024-11-03 16:23:54 - User Delsing Jan
Language: EN
Text function: [[t:1939616,textblock=131338,elang=EN;Description]]
Shell small, thin, translucent white, subdiscoidal. Spire slightly elevated ; widely and perspectively umbilicated. Protoconch globulose and hyaline. Ordinary whorls three, of rather rapid increase ; ornamented by rounded spiral and axial threadlets, which on the antesutural slope are of about equal strength and equidistant, producing a reticulation of square meshes ; on the rounded periphery the spiral riblets are dominant as far as the edge of the umbilical crater, but in its gentle slope the axia riblets reappear, and in greater strength than they are posteriorly. Aperture orbicular ; peristome thin and continuous.
Dimensions of figured example.—Major diameter, 1,66 ; minor diameter, 1,1; height, 0,95 mm.
Locality.—Fowler Bay, west coast of South Australia; collected by me in 1879.
Reticulated sculpture is rare in the family, and the peculiarity of its partial development in the present species is in itself a sufficiently distinctive character.
Tate, R. (1899). A revision of the Australian Cyclostrematidae and Liotiidae.