Demoulia

Demoulia is a genus of sea snails, marine gastropod mollusks in the family Nassariidae, the Nassa mud snails or dog whelks.

Description
The ovate-globose shell is covered with a downy epidermis. The spire is short, conical with a papillary apex. The whorls are depressed. The aperture is ovate. The inner lip is thickened, with a ridge posteriorly. The outer lip is contracted, thickened externally and plicated internally.

Species
Species within the genus Demoulia include:
 * Demoulia abbreviata (Gmelin, 1791)
 * † Demoulia conglobata (Brocchi, 1814)
 * Demoulia nataliae Kilburn, 1972
 * Demoulia obtusata (Link, 1807)
 * † Demoulia pupa (Brocchi, 1814)
 * Demoulia tryoni (Crosse, 1869)
 * Demoulia ventricosa (Lamarck, 1816)
 * † Demoulia zbyszewskii Landau, Marques da Silva & Gili, 2009
 * Species brought into synonymy :
 * Demoulia kurodai Tomlin, 1932 : synonym of Nassarius sufflatus (Gould, 1860)
 * Demoulia pulchra Gray, 1838 : synonym of Demoulia obtusata (Link, 1807)
 * Demoulia retusa (Lamarck, 1822) : synonym of Demoulia ventricosa (Lamarck, 1816)