Eupyrgus

Lütken, 1857

2 species

Tentacles 15 simple and without digits or ampullae. Body tapering posteriorly into a short but distinct caudal appendage. Radial pieces of calcareous ring with no posterior prolongations, or with very slight ones on those of the ventral side. Longitudinal muscles simple and unpaired. Calcareous deposits in the form of tables with perforated disc and high spire. Phosphatic deposits wanting. (Clark, 1907)