Protoconch large, smooth, 1,5 or 2 convex whorls, first half-whorl deviated, merging gradually into adult sculpture, nucleus submerged. Teleoconch 4,5 convex whorls, strongly ribbed. Sutures deeply impressed. Sculpture of strong, broadly rounded axial ribs, 10 on penultimate, tending to fade on body-whorl, and terminating a little below periphery; ribs crossed by strong flat-topped transverse striae, 12-14 on body-whorl, 4-5 on penultimate, all crossed by microscopic growth lines. Umbilicus nil. Aperture ovate, broadly rounded posteriorly, a short wide siphonal canal anteriorly, 2 small faint centrally situated plaits; inner-lip strongly reflected on to body-whorl, peritreme entire; outer-lip regularly curved, strongly thickened but sharp-edged, flared outwards, 6 strong internal lirae. Colour off-white. Dimensions. Holotype, length 7 mm, breadth 3 mm. This appears to be maximum size.

The only differences between the two Recent specimens above and fossil specimens is that in the fossils the transverse striae commence a little lower down the whorls, leaving a clear space below the sutures, the sutures are not quite so deeply impressed, and the columella plaits are a little stronger. These small differences are insufficient to warrant separation, especially as only two Recent specimens are known, and also in view of their eroded condition. This species is almost identical with the New Zealand fossil species Inglisella pukeuriensis Suter, type for the genus, except for the deviated protoconch in I. etheridgei.

Type locality. Fossil Bluff, Table Cape, near Wynyard, N.W. Tasmania. Table Cape Group: Longfordian: Lower Miocene. 2 recent specimens, 48 km S. of Cape Everard, Victoria, 366 metres, "Endeavour", 22/10/1914, A.M. No. C. 89271 (37° IT S., 149° 47' E.).