Taxon classification Animalia Stylommatophora Clausiliidae

Montenegrina hiltrudae Nordsieck, 1972

Diagnosis.

Shell small to large, light corneous to light brown. Lower whorls smooth to costate, sculpture stronger toward the apex. Neck variably inflexed. Basal crest weak to strong, peripheral crest weak to not recognizable. Peristome circular to ovoid, with simple to swollen margin. Lamellae superior and spiralis with no to long overlap. In front view lamella inferior more or less well emerged, broadly-bent subcolumellaris variably exposed. Lunella dorsal to dorsolateral. Basalis absent to strong, fused to or separate from the lunella. Subclaustralis absent to weak, sulcalis rudimentary to strong. Anterior plica superior present, connected to or separate from the lunella complex. Clausilium plate partly visible through the aperture.