Tomocyclus
Tomocyclus is a genus of land snails, terrestrial gastropod mollusks in the subfamily Megalomastomatinae of the family Megalomastomatidae.
Description
The shell is perforated, turreted, and truncated. The aperture is subcircular and small. The peristome is double-layered: the inner layer is briefly projected inward, while the outer layer is broadly expanded, resembling a leaf. The upper margin of the outer lip is interrupted, with a unique, incised, and hollowed-out appearance.The operculum is circular, corneous but relatively thick, and spirally wound. It is slightly flattened anteriorly and reinforced posteriorly by a blunt, rounded process. The margins of the operculum exhibit a somewhat lamellar structure.
Species
Tomocyclus fistulosus F. G. Thompson, 1963Tomocyclus gealei Crosse & P. Fischer, 1872Tomocyclus guatemalensis Tomocyclus lunai Bartsch, 1945Tomocyclus simulacrum;Synonyms:Tomocyclus constrictus Bartsch & J. P. E. Morrison, 1942: synonym of Tomocyclus simulacrum Tomocyclus copanensis : synonym of Tomocyclus simulacrum Tomocyclus siphonis Bartsch & J. P. E. Morrison, 1942: synonym of ''Tomocyclus simulacrum''