Imperforate, elongated, turrited. Ground color pale yellow, fading above, the earlier two whorls pure white. More or less marked on the body whorl with longitudinal white hydrophanous stripes. Aperture, lip and columella pure white.
Alt. 47, diam. 22 ; aperture, alt. 23 mill.
The typical C. diana is known by its light yellow color and white apex and aperture. It varies much in degree of elongation, and in carination, some specimens being as distinctly carinated as C. carinata Lea.
All manner of transition forms between calista and diana occur; Some specimens are yellowish-green, longitudinally clouded with white hydrophanous cuticle; the earlier two whorls are ivory white, the lip dark brown, columella encircled by a purple-brown area.