Olivella rehderi is a species of small sea snail, marine gastropod mollusk in the subfamily Olivellinae, in the family Olividae, the olives. Species in the genus Olivella are commonly called dwarf olives.
Original description: "Shell small (length 7 to 8 mm.), rather light and thin, with an elevated, turreted spire of about 6 whorls, nearly half the total length. Sutures are widely grooved, the collar-like edge of the forward whorl rather narrow. Parietal callus extends to the upper suture of the penultimate whorl, heaviest at the posterior end of aperture. Pillar structure formed by 4 or 5 descending, strong lirations on the anterior portion of the columella. Color a dull white or cream, and slightly variegated with faint spots or flammules of brown arranged roughly in 3 zones, an upper set of spots just below the suture, the other two around the middle and base. Fasciole white. Length 7.7 mm., diameter 3.3 mm."[1]
Olivella rehderi is native to the country of Ecuador.
Average size is 5.3 millimetres; the shells are muted but attractive colors;
they may also have some kind of patterning.
Locus typicus: "Panama Bay, Panama."[2]