[3] This species is native to, and its occurrence is restricted to, Fernando de Noronha, an island off the coast of Brazil.

[1] The type specimen is stored in the British Museum of Natural History.

[4] The shell is umbilicated, ovate, conic above, moderately solid, brown with a buff line at the periphery, very delicately sculptured with lines of growth, and sometimes has low wrinkles and fine impressed spiral striae.

The last whorl is a little descending and then slightly ascending in front, distinctly constricted behind the peristome.

The outer lip is subangularly arcuate above, terminations joined by a thin or thick parietal callus, which is thickened and somewhat tubercular above, separated by a vertical groove or channel from a similar callous lobe on the outer lip, near its insertion.