Architectonica taylori
Architectonica taylori is a species of sea snail, a marine gastropod mollusk in the family Architectonicidae, which are known as the staircase shells or sundials.
Description
The diameter of the shell attains 43 mm.The shell is depressed-conical, solid, and tawny. The suture is broadly channeled. The whorls are articulately painted in 4 brownish-red girdles. They are broken up into rhombuses, which are much broader than high, by radiating grooves. The whorls are excellently divided by rather broad grooves.
The double girdles of the periphery are nearly equal and similarly painted, with an unsculptured interval between them that is equally broad and slightly exceeds the width of the preceding groove. The middle part of the basal area is ornamented only by very small brown spots near the inner margin, being more or less smooth elsewhere. The groove nearest the obtuse keel is rather broad and not thread-like. The girdle between the broad grooves neighboring the umbilicus is conspicuously narrow. The crenations of the rather narrow umbilicus are quite large and flesh-reddish.