Shell solid, with spiral cords and axial ribs. Protoconch with about 1,125 whorl; nucleus of 150 µm and a diameter of 350-380 µm. With 6 spiral cords on the first teleoconch whorl, 4-5 on the second and third, 5-6 on the penultimate and 8-10 on the upper part of the last whorl, followed by 4-5 small and narrowly spaced ones on the base. The aperture is ovoid, with a deep siphonal canal below, and no internal nodules in the external lip, while the external part has about 9-10 prominences, which are the ends of the spiral cords. Peristome sharp. Columella curved, with a thickened callus. The microsculpture (fig. 19) is formed by axial, very small striae, which are not present on the spiral cords.The holotype is 3.4 mm long; the paratypes are slightly larger.

The new species can be differentiated from S. aberrans by the planktotrophic protoconch of the latter. Stosicia houbricki has fewer cords on the initial whorls of the teleoconch, i.e. only 3-4 (versus 5-6) on the penultimate whorl, and fewer nodules on the external lip, i.e. only 7 (versus 9-10). Stosicia fernandezgarcesi has fewer cords on the initial teleoconch whorls but more on the last ones and on the external lip, which is wider; it also has more convex whorls.

Caribbean Honduras