C. lunaristoma – from Coûteaux et Chardez, 1981
Genus Cornuapyxis Coûteaux & Chardez, 1981
Diagnosis: Form similar to Cyclopyxis but aperture crescent-shaped. Shell hemispherical in lateral view, ventral sole weakly invaginated, smooth, dorsal surface covered with small mineral grains.
Ecology: From mosses and soil, tropical rain forests, French Guyana.
Monospecific. Ref. Coûteaux and Chardez (1981).
Type species: Cornuapyxis Iunaristoma Coûteaux & Chardez, 1981.