William Swainson, A Treatise on Malacology; or the Natural Classification of Shells and Shell Fish, Londres, Green & Longmans, 1840.
SUB-FAM. ROTELLINAE.
THELIDOMUS Sw. (fig 113)
Turbinate, sub-trichiform ; umbilicus large, open; the whole shell entirely composed of grains of sand.
Braziliensis sw. (fig 113.)