The genus Constantia with the type-species C. elegans A. Adams, 1860 from the Strait of Korea (figured by Waren & Bouchet 1988: 87, fig. 35) is characterized by a tall rissoiform shell having a strong reticulate sculpture with strait axial ribs. The aperture is rounded. A narrow slit-like umbilicus is present.
The tall rissoiform shell distiguishes Constantia from the genera Vanikoro, Megalomphalus, Macromphalus and Dialytostoma. It differs from Micromphalina by the prominent sculpture of the teleoconch and by the well rounded aperture.