Shell: minute, ovate to ovate-conic, whorls convex; aperture with simple peristome, with posterior angulation but lacking distinct anterior and posterior channels; outer lip prosocline, with or without weak external varix; surface smooth or with weak to moderate spiral threads and axial growth lines. Protoconch dome-shaped, of about 1 1/4 - 1 1/2 whorls, first 1/2 whorl very large; surface either smooth, except for weak spiral threads on last 1/4 whorl, or with spiral rows of minute gemmae.
Head Foot: snout bilobed, metapodial and pallial tentacles present or absent.
Operculum: simple, thin, paucispiral, nucleus eccentric.

Eastern Atlantic and Mediterranean Sea.

The relationships of Setia to Pusillina may be closer than implied by the classification adopted here but, on shell characters, the two groups are readily distinguished. More anatomical comparisons are required to establish their real relationship and that of Pseudosetia.
The protoconch microsculpture, small, smooth, ovate-conic teleoconch and simple aperture distinguish species of Setia from those of Rissoa and Pusillina. The external features of the animal indicate that the type-species of Setia is similar to Rissoa and Pusillina but differs chiefly in lacking a pallial tentacle. Species of Rissoa and Pusillina tend to develop axial sculpture whereas species of Setia are smooth or spirally striate.