Description. - Shell thin, translucent. Valves inequilateral. Anterior auricles larger than posterior ones. Microsculpture of very fine radiating grooves and irregularly set concentric ridges, latter ornamented with tuberculous outgrows. Microsculpture continued on auricles, with exception of anterior auricle of right valve, which has ribs composed of more or less scalelike tubercles. Byssal notch broad, as well as ctenolium. Resilium triangular and very small. Remarks. - Only one species is known from European waters, which has a very widespread distribution.

Beu (1970: 117) summed up the characters of Delectopecten as "differs from Cyclopecten in having the posterior auricles not marked off from the disc, in having a deep, narrow byssal notch in the right valve, and in having no byssal notch in the left valve, the left anterior auricle being weakly marked off from the disc and having its outline almost tangential to the outline of the disc in most species."