The Echinoid Directory

Asthenosoma varium Grube, 1868. Recent, Jolo. Oral surface, from Mortensen, T. 1935. A monograph of the Echinoidea. Volume 2, Bothriocidaroida, Melonechinoida, Lepidocentroida and Stirodonta. C.A. Reitzel, Copenhagen (pl. 57).

Diameter of test 168 mm.