|Pores regular, circular, three times as broad as the bars; five to six on the radius. Twenty radial spines, broom-shaped, three times as long as the shell diameter; in the proximal half simple, in the distal half branched, with three to nine branches, which are again ramified; spines and their branches with three smooth edges, not dentated. |
Diameter of the shell 0,055, pores 0,0075, bars 0,0025; length of the spines 0,15, basal thickness 0,007.
Habitat: Central Pacific, Station 271, surface