As Acmaea roseoradiata [syn]:
Shell very small, oval, conical, with broad pinkish radiate rays. The sculpture, which only a good lens will reveal, consists of 20 very indistinct low riblets on the lower half of the shell, each bordering one of the pinkish rays ; upper half with about twice the number of microscopic subobsolete radiate striae. The colour of the upper half is light pinkish-brown, of the lower part white, with 10 broad radiate pinkish rays, unequally distanced. Apex sharply pointed, very little in front of the centre. Inside with the central area pinkish, slightly lighter coloured in the middle ; border rayed like the outside, margin sharp. Length, 3,5 mm. ; breadth, 2,5 mm.; height, 1,5 mm. This pretty little shell is well characterized, and quite distinct from all the other known New Zealand species of the genus.

New Zealand. Finding places: The type is from 18 fathoms, Port Pegasus, Stewart Island (Captain Bollons) ; Dusky Sound, 30 fathoms (R. Henry) ; Taumaki Island, west coast of the South Island, in 10 fathoms (Captain Bollons) ; Snares, in 50 fathoms (Captain Bollons).