About Eupleura sulcidentata Dall, 1890
Eupleura sulcidentata Dall, 1890, commonly called the sharp-ribbed drill, is a small species that grows no larger than 25mm. Its overall shape matches that of a typical murex, but in miniature form. Unlike most murexes, which have varices (ribs) spaced roughly 120° apart, the varices of this species are spaced approximately 180° apart. The varices have a wavy texture and a sharp-looking edge. Small bumps or nodes sit between the varices. The shell is most commonly whitish or off-white, and may occasionally be buff or even brown. Sometimes, a brown stripe appears on the upper section of each whorl. The sharp-ribbed drill is a carnivore. As its common name "drill" suggests, it uses its radular teeth to bore holes into the shells of other mollusks. This species is distributed in the Gulf of Mexico and the Caribbean Sea.
