clade Hypsogastropoda Maxwellia santarosana,[1] common name the "Santa Rosa murex" is a species of small predatory sea snail, a marine gastropod mollusk in the family Muricidae, the rock snails.
The hollow sutures are visible when not hidden by the subsequent whorl.
The outer lip is finely crenulate but its inner surface is smooth.
The siphonal canal is of moderate length and, as typical for this genus, fused on top, almost sealed below and pointing to the left at its base.
The shell sculpture shows major and minor cords.