There are six evenly rounded whorls, but with a sharp carina, above which they are smooth, whilst below it they are grooved, with wider interspaces.
In most specimens the streaks in interspace 1 and in cell are irrorated with black scales.
It is clathrate by about 15 equidistant radiating and 7 spiral ribs, with deep pitted interspaces.
In a few specimens there is also a small reddish-brown spot in interspace 1 near the tornus.
The axial sculpture consists of fine, even, arcuate wrinkles, which, except where they bead the posterior thread, are chiefly visible in the interspaces.
Underside brown, with very broad darker brown transverse fasciae, the interspaces between the markings irrorated with purplish silvery scales.
We wished to provide a good quality driving standard with opportunities for overtaking clearly indicated on a road which was interspaced with somewhat tighter bends where overtaking would be prohibited.
No detailed assessment of the potential benefits of interspacing trees and aero-generators has been made.
