Amphiatlantic. Gulf of Mexico and E. USA to Madeira, Cabo Verde, Mediterranean. Planktotrophic. Low infralittoral and at least circalittoral. Original taxon: Scalaria striatissima. Synonym: rushii Dall.
 
« Shell extremely fragile, corneous, transparent, having numerous filiform costulations and spirally striated so that the whole surface is covered. No other mediterranean species has such a texture. The general shape is that of S. pulchella Bivona. » – T. A. di Monterosato: “Note sur quelques coquilles draguées dans les eaux de Palerme”, Journal de Conchyliologie vol. 26(2), Paris 1878, p.151 via BHL.
 
In fact, the shell of striatissimum bears the same kind of “texture” than that of Epidendrium dendrophylliae (Bouchet & Warén, 1986) but it is more slender, with less convex whorls and a fewer number of spirals. The radials are prosocline.

Left image: there is a thin microsculpture of incremental lines visible between the spiral ribs. As often in the genus (but not always), the radial folds are more developed in the subsutural area (Bouchet & Warén, 1986).
 
Right: « three nuclear whorls » (Dall, 18889), the two upper ones with a very anteriorly placed periphery.