Shell: moderately small, solid, elongate to sub-pyriform, ranging from 24-30 mm.
Spire flattened, sometimes visible. Teeth: 20 columellar teeth; 16 labral teeth.
Sculpture: smooth, porcelaneous.
Aperture narrow and even.
Exterior colour dorsum oilve green with 3 blueish bands dusted ith fine, diffuse bron freckles a darker dowsum blotch is sometime spresent; base and margins cream; yellow beteen the teeth.
Specimens
Marau Sound, Solomon Islands Size: 30.8mm Collected: Unknown Collected on coral rubble by scuba diver.
Subspecies: Erronea ovum chrysostoma F. A. Schilder, 1927 Rhomboid; often heavy; dorsum greenish with distinct traverse bands and fine, brown freckles; blotch absent; bright orange dental interstices. Port Moresby, Papua New Guinea Size: 24.46mm Collected: 1984 No data.
Olango Island, Philippines Size: mm Collected: 2015 taken by diver in 20 m Often confused with Erronea errones, but E. ovum had yellow between the teeth
