Megaustenia heliciformis (Pfeiffer, 1854)
Morphology:
Pfeiffer (1854) original descriptions on Vitrina heliciformis – “V. testa subperforata, depresso-globosa, subheliciformi, tenuissima, membranacea, radiato-rugata et striis spiralibus minutissimis sub lente sculpta, pellucida, virenti-cornea; spira subconoidea, superne erosa, alba; anfract. 5 vix convexiusculis, sensim accrescentibus, ultimo peripheria subangulato, basi inflato; apertura fere diagonali, rotundato-lunari; perist. simplice, marginibus dextro et basali subinflexis, columellari fere verticali, superne subreflexo.”
Size:
Vitrina heliciformis – “Diam. Maj. 17, min. 14, alt. 10.” (Pfeiffer, 1864)
Distribution:
Type locality – “Mount Ophir” leg. Traill (Pfeiffer, 1854)