Shell globose, smooth, beneath the epidermis white with brown bands; spire elevated, tip obtuse; margin of the aperture thick, white; umbilicus none.

Shell globose, very smooth, olive; spire depressed; margin of the aperture thick, fulvous, grooved; umbilicus small, contracted, placed near the base; operculum shelly.

Trees, with alternate palmately lobed leaves, sheathing stipules, and monœcious flowers in separate globose heads.