Adelphotectonica reevei
Adelphotectonica reevei is a species of sea snail, a marine gastropod mollusk in the family Architectonicidae, known as the staircase shells or sundials.
Description
The diameter of the shell attains 28 mm, its height 20 mm.The shell is tawny-flesh or livid-flesh-colored. It is encircled on each whorl by small, intensely tawny spots arranged in 5-6 series. It is radiated with contiguous, thin, transversely oblique striae that eventually become obsolete. The suture is not channeled. The whorls are not rapidly expanded.
They are ornamented below a broad, minimally deep spiral groove by a supra-sutural girdle, which is often whitish and remotely articulated with tawny brown. Elsewhere, they are inconspicuously spirally sculptured. The base and periphery are almost as in S. laevigato. However, the near-umbilical girdle is closely spotted.