Shell: , ranging from 20-24 mm.
Teeth: 14 columellar teeth; 17 labral teeth.
Specimens
Subspecies: Bistolida brevidentata fluctuans (Iredale, 1935) columnar teeth extend onto the base posteriorly Dicky Beach, Australia Size: 20.61mm Collected: Unknown Collected on intertidal rocks. by hand [low tide] at low tide.
Subspecies: Bistolida brevidentata fluctuans (Iredale, 1935) columnar teeth extend onto the base posteriorly Dingo Beach, Australia Size: 24.39mm Collected: Unknown Collected from under coral slabs on hard reef at 5 m at low tide.
Finucane Island, Australia Size: 20.35mm Collected: Unknown Collected from under coral slabs on exposed reef by hand [low tide] at extreme low tide. dark blue grey, unblotched
Subspecies: Bistolida brevidentata deceptor Torres Straight, Nth QLD. Oval, inflated and calloused. Aperture curved and wider, posterior narrow and pointed; marginal blotches reaching towards dorsal blotch. Thursday Island, Australia Size: 28.11mm Collected: Unknown Collected from coral reef on under rock at 2 m by Snorkle.
