Shell of moderate size, up to 34 mm. (l,375 inches) in length, rather solid, ovate, elevated, the apex at the anterior fourth; margin finely crenulated. Sculpture consisting of numerous, flattened, radial ribs of varying width, some rather broad, and all with linear interspaces; these radials are further subdivided by one or two shallower radial grooves, and the whole surface is densely and delicately concentrically crossed by growth lines that render the radials weakly granulose over the early part of the shell; there being a general smoothness of the ribbing towards the margin. Colour of exterior greenish grey to greyish buff, the narrow interspaces lined in dark-brown, and some have radial streaks of the same colour; interior yellowish to orange-brown, with the spatula dark reddish brown, usually more or less completely clouded with greyish-white callus; the external pattern shows through strongly except in fully adult examples, which have a rounded callused margin, and in these the external radial lines form short radial dashes corresponding to the external linear interspaces. Length: 26-34 mm; Width: 21-28mm; Height: 11,5-18 mm.

This species is distinguished from the other Lord Howe Island limpet, C. analogia, in the form of the ribbing which consists of broad low radials that are separated by linear interspaces. There is also, a radial pattern of dark-brown lines in the rib interstices, as well as varying radial streaks of the same colour. The nearest related species seems to be the Australian C. tramoserica.

Australia. Lord Howe Island, Ned's Beach.