Hymenosoma

Hymenosoma (crown crabs) is a genus of crabs, containing the following species:
 * Hymenosoma depressum Hombron & Jacquinot, 1846
 * Hymenosoma gaudichaudii Guérin, 1831
 * Hymenosoma geometricum Stimpson, 1858
 * Hymenosoma hodgkini Lucas, 1980
 * Hymenosoma longicrure Dawson & Griffiths, 2012
 * Hymenosoma orbiculare Desmarest, 1823
 * Hymenosoma projectum Dawson & Griffiths, 2012
 * Hymenosoma trilobatum Dawson & Griffiths, 2012

The majority of the species are found around southern Africa; the Australasian species H. hodgkini and H. geometricum may be better placed in other genera.