Drillia pentagonalis Verco, 1896 Exomilus telescopialis is a species of sea snail, a marine gastropod mollusk in the family Raphitomidae.

The whorls of the spire are sloping, nearly straight, gradated, angled at junction of posterior and middle fourth.

The whorls are sculptured with spiral lirae, four to six in front of the angle, two behind it, flatly rounded, equidistant, wider than the interspaces.

In some specimens crossing the spiral lirae and wider than them, generally most marked and forming conspicuous costae in the second and third spire-whorls.

The outer lip is simple, thin, crenulated, with a well-marked semi-circular sinus from the posterior angulation to the suture.