|Drawing with two views of a shell of Gibbula drepanensis|
Trochus drepanensis Brugnone 1873
The size of the shell varies between 2 mm and 5 mm. The small shell is narrowly umbilicate, depressed, and stomatella-shaped. It is whitish, zigzagly striped with red, the stripes often broken into spots, white around the umbilicus. The spire is very short. The sutures are impressed. The 3 to 4 whorls are convex and rapidly widening. They are encircled by spiral striae which are nearly obliterated on the body whorl. This body whorl is very large and depressed . The large aperture is oblique and subcircular. The columella is arcuate. 
- Gibbula drepanensis (Brugnone, 1873). Retrieved through: World Register of Marine Species on 1 May 2010.
- Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia
- Brugnone G. A., 1873-1876: Miscellanea malachologica; Palermo, Part 1: pp. 15 + 1 pl. . Part 2: pp. 25 + 1 pl.
- Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 180-213