Shell small (up to 2.01 mm, N = 2), ovate, rather stout. Protoconch of non-planktotrophic larval type, moderately globose. Teleoconch : of 3 1/2 to 4, moderately convex whorls ; sutures rectilinear, moderately to deeply impressed. Spiral sculpture of spire whorls of more or less regularly spaced, extremely narrow grooves ; last whorl with narrow, rounded, very closely spaced spiral ribs with narrow and rather shallow interspaces; spiral ribs becoming slightly more prominent near shell base (shell surface of syntype badly worn, but traces of spiral sculpture visible). Axial sculpture of extremely short and very closely spaced microscopic threads in spiral grooves of spire whorls and in interspaces between spiral ribs. Aperture : lenticular ; inner lip weakly thickened posteriorly, strongly thickened anteriorly near transition to the narrow, deep and short anterior channel; outer lip thin internally, externally with a moderately thick and narrow varix, the latter bearing weak spiral riblets ; outer lip weakly opisthodine in profile. Shell colour: white. Stosicia bougei superficially resembles Isseliella incisa (LASERON, 1956) in both shell shape and size, but differs essentially in lacking the axial ribs on the spire whorls.