Shell of small to medium size, up to 53 mm. (2,125 inches) in length, narrowly ovate, with the apex varying between the anterior fourth to fifth in adults, but one eighth or less in juveniles. Anterior slope straight, but posterior slope prominently arched, and flattened on top for about one third of the length. Sculpture consisting of about 25 narrowly rounded primary radials, and a few very weak intermediates. Young shells have the radials as scarcely raised folds, crossed by dense concentric growth lines. Colour of exterior almost uniformly olive-brown, except for the nuclear area to about 15 mm., which is dark-brown, with a light bluish ocellate pattern in the rib interstices; interior metallic dull smoky-grey, with a dark brown internal rib pattern showing through the glaze, and coalescing at the margin, in adults, to form an almost continuous border; spatula buff, tinged posteriorly with pale reddish brown. Length: 17-53 mm; Width: 12,5-42 mm; Height: 3,4- 22 mm.

This subspecies is more closely allied to typical strigilis than it is to redimiculum, from both of which it differs in its consistently more narrowly oval shape, high arched profile, and anterior position of the nucleus.

Snares Islands, southern New Zealand.