Turbonilla jeffreysi: Description Graham, A.
Shell a moderately tail, rather broad cone; whorls with subsutural shelf, sutures just below periphery of each whorl; ornament of narrow, mainly orthocline costae and spiral ridges in the intercostal spaces. Aperture square to rhomboidal; no true umbilical groove or umbilicus. Tooth absent though usually a slight bulge on columella. Cream with two, occasionally three brown spiral bands on the last whorl.
The spire is noticeably cyrtoconoid and has a turreted profile. There are seven postlarval whorls, those of the protoconch often lost, meeting at sutures made sinuous by the uprising ends of the costae. The costae are much narrower than the intervening spaces; there are 16-22 on the last whorl where they fade below the periphery, 17-19 on the penult whorl. The last whorl has 20-25 spiral ridges, the penult 10-12. One coloured spiral band lies at the periphery, another is subperipheral and these two are regularly present; a third is subsutural but this may be absent. Up to about 6mm high, 2 mm broad; last whorl occupies about half the shell height (usually slightly less), aperture about 30% or a little less.
The tentacles are triangular, grooved along the lateral margin, rather longer and narrower than in most species. The mentum is long and narrow, dorsally grooved and bifid distally where the proboscis opens. The eyes lie between the tentacle bases. There is a lobed projection on the mantle skirt on the right. The foot is short, truncated anteriorly, with a median embayment and extended lateral points, pointed posteriorly. White with numerous white spots and a general reddish tinge; the foot has white streaks alongside the operculum and there is yellow on the mantle edge.


(Secundary description - Scaperotta):
Shell conic in form, with graded whorls and deep sutur. Sculpture made by very narrow axial little ribs orthocline and wide interspaces in which there are in evidence several spiral little ridges crossing the whole shell.
Uniform yellowish in colour, sometimes with some brown spiral streaks.
Average measures around 6 mm in height.

Turbonilla jeffreysi: Common all over the Mediterranean. It was found into coralligenous detritals, in a few metres