Honaunau, Hawaii, 30 feet, 39mm

Ka'ohe, Hawaii, 60 feet, 33mm

Uncommon at any depth on the island of Hawaii & Maui.  Broad flat ribs separated by about 12 punctures becoming obsolete on base, white with flesh-colored blotches.  Attains 1.5 inch.   Red Sea to Hawaii and French Polynesia.